diff --git a/FFUDevelopment.zip b/FFUDevelopment.zip
new file mode 100644
index 0000000..70cea0d
Binary files /dev/null and b/FFUDevelopment.zip differ
diff --git a/FFUDevelopment/BuildFFUVM_UI.ps1 b/FFUDevelopment/BuildFFUVM_UI.ps1
index dfa01b4..4247de1 100644
--- a/FFUDevelopment/BuildFFUVM_UI.ps1
+++ b/FFUDevelopment/BuildFFUVM_UI.ps1
@@ -9,7 +9,7 @@ if ($PSVersionTable.PSVersion.Major -lt 7) {
 }
 
 # Creating custom state object to hold UI state and data
-$FFUDevelopmentPath = 'C:\FFUDevelopment' # hard coded for testing
+$FFUDevelopmentPath = $PSScriptRoot
 
 $script:uiState = [PSCustomObject]@{
     FFUDevelopmentPath = $FFUDevelopmentPath;
diff --git a/FFUDevelopment/BuildFFUVM_UI.xaml b/FFUDevelopment/BuildFFUVM_UI.xaml
index fecf2b0..d485da0 100644
--- a/FFUDevelopment/BuildFFUVM_UI.xaml
+++ b/FFUDevelopment/BuildFFUVM_UI.xaml
@@ -665,13 +665,15 @@
                             <RowDefinition Height="Auto"/>
                             <!-- Row 5: Username -->
                             <RowDefinition Height="Auto"/>
-                            <!-- Row 6: General Build Options Header -->
+                            <!-- Row 6: Threads -->
                             <RowDefinition Height="Auto"/>
-                            <!-- Row 7: General Build Options Checkboxes -->
+                            <!-- Row 7: General Build Options Header -->
                             <RowDefinition Height="Auto"/>
-                            <!-- Row 8: Build USB Drive Header -->
+                            <!-- Row 8: General Build Options Checkboxes -->
                             <RowDefinition Height="Auto"/>
-                            <!-- Row 9: Build USB Drive Options Grid -->
+                            <!-- Row 9: Build USB Drive Section -->
+                            <RowDefinition Height="Auto"/>
+                            <!-- Row 10: Post-Build Cleanup -->
                             <RowDefinition Height="Auto"/>
                         </Grid.RowDefinitions>
                         <Grid.ColumnDefinitions>
@@ -728,11 +730,20 @@
                             <TextBlock Grid.Column="0" Text="Username" VerticalAlignment="Center" ToolTip="Username for accessing the shared folder. The default is ffu_user. The script will auto-create the account and password. When finished, it will remove the account."/>
                             <TextBox x:Name="txtUsername" Grid.Column="1" Margin="5" VerticalAlignment="Center" ToolTip="Username for accessing the shared folder. The default is ffu_user. The script will auto-create the account and password. When finished, it will remove the account."/>
                         </Grid>
-                        <!-- Row 6: General Build Options Header -->
-                        <TextBlock Grid.Row="6" Text="General Build Options" FontWeight="Bold" FontSize="16" Margin="0,10,0,5"/>
+                        <!-- Row 6: Threads -->
+                        <Grid Grid.Row="6" Margin="0,5">
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="200"/>
+                                <ColumnDefinition Width="*"/>
+                            </Grid.ColumnDefinitions>
+                            <TextBlock Grid.Column="0" Text="Threads" VerticalAlignment="Center" ToolTip="Controls the number of parallel threads used by ForEach-Object -Parallel and sets the value of the -ThrottleLimit parameter. Default is 5. Used in Winget, Application Copy, and driver downloads"/>
+                            <TextBox x:Name="txtThreads" Grid.Column="1" Margin="5" VerticalAlignment="Center" Width="50" HorizontalAlignment="Left" Text="5" ToolTip="Controls the number of parallel threads used by ForEach-Object -Parallel and sets the value of the -ThrottleLimit parameter. Default is 5. Used in Winget, Application Copy, and driver downloads"/>
+                        </Grid>
+                        <!-- Row 7: General Build Options Header -->
+                        <TextBlock Grid.Row="7" Text="General Build Options" FontWeight="Bold" FontSize="16" Margin="0,10,0,5"/>
 
-                        <!-- Row 7: General Build Options Checkboxes -->
-                        <WrapPanel Grid.Row="7" Margin="0,5">
+                        <!-- Row 8: General Build Options Checkboxes -->
+                        <WrapPanel Grid.Row="8" Margin="0,5">
                             <CheckBox x:Name="chkBuildUSBDriveEnable" Content="Build USB Drive" Margin="5" VerticalAlignment="Center" Tag="When set to $true, will partition and format a USB drive and copy the captured FFU to the drive."/>
                             <CheckBox x:Name="chkCompactOS" Content="Compact OS" Margin="5" VerticalAlignment="Center" Tag="When set to $true, will compact the OS when building the FFU."/>
                             <CheckBox x:Name="chkUpdateADK" Content="Update ADK" Margin="5" VerticalAlignment="Center" Tag="When set to $true, the script will check for and install/update to the latest Windows ADK and WinPE add-on."/>
@@ -743,8 +754,8 @@
                             <CheckBox x:Name="chkVerbose" Content="Verbose" Margin="5" VerticalAlignment="Center" Tag="When set to $true, will enable write-verbose output to the console for the build script."/>
                         </WrapPanel>
 
-                        <!-- Row 8: Build USB Drive Section -->
-                        <StackPanel Grid.Row="8" Margin="0,10,0,5" x:Name="usbDriveSection" Visibility="Collapsed">
+                        <!-- Row 9: Build USB Drive Section -->
+                        <StackPanel Grid.Row="9" Margin="0,10,0,5" x:Name="usbDriveSection" Visibility="Collapsed">
                             <TextBlock Text="Build USB Drive Settings" FontWeight="Bold" FontSize="16" Margin="0,0,0,10"/>
                             <StackPanel Margin="5,0,0,10">
                                 <CheckBox x:Name="chkAllowExternalHardDiskMedia" Content="Allow External Hard Disk Media" Margin="5" VerticalAlignment="Center" Tag="When set to $true, will allow the use of external hard disk media."/>
@@ -780,8 +791,8 @@
                             </StackPanel>
                         </StackPanel>
 
-                        <!-- Row 9: Post-Build Cleanup -->
-                        <StackPanel Grid.Row="9" Margin="0,10,0,5">
+                        <!-- Row 10: Post-Build Cleanup -->
+                        <StackPanel Grid.Row="10" Margin="0,10,0,5">
                             <TextBlock Text="Post-Build Cleanup" FontWeight="Bold" FontSize="16" Margin="0,0,0,5"/>
                             <CheckBox x:Name="chkCleanupAppsISO" Content="Cleanup Apps ISO" Margin="5" VerticalAlignment="Center" Tag="Remove Apps ISO after FFU capture."/>
                             <CheckBox x:Name="chkCleanupCaptureISO" Content="Cleanup Capture ISO" Margin="5" VerticalAlignment="Center" Tag="Remove WinPE capture ISO after FFU capture."/>
diff --git a/FFUDevelopment/FFU.Common/FFU.Common.Parallel.psm1 b/FFUDevelopment/FFU.Common/FFU.Common.Parallel.psm1
index bb76e1b..bf892b5 100644
--- a/FFUDevelopment/FFU.Common/FFU.Common.Parallel.psm1
+++ b/FFUDevelopment/FFU.Common/FFU.Common.Parallel.psm1
@@ -21,7 +21,9 @@ function Invoke-ParallelProcessing {
         [Parameter(Mandatory = $false)] 
         [object]$WindowObject = $null, # Changed type to [object]
         [Parameter(Mandatory = $false)]
-        [string]$MainThreadLogPath = $null # New parameter for the log path
+        [string]$MainThreadLogPath = $null, # New parameter for the log path
+        [Parameter(Mandatory = $false)]
+        [int]$ThrottleLimit = 5
     )
     # Check if running in UI mode by verifying the types of the passed objects
     $isUiMode = ($null -ne $WindowObject -and $WindowObject -is [System.Windows.Window] -and $null -ne $ListViewControl -and $ListViewControl -is [System.Windows.Controls.ListView])
@@ -287,7 +289,7 @@ function Invoke-ParallelProcessing {
                 DriverPath = $driverPathValue
             }
 
-        } -ThrottleLimit 5 -AsJob
+        } -ThrottleLimit $ThrottleLimit -AsJob
     }
     catch {
         # Catch errors during the *creation* of the parallel jobs (e.g., module loading in main thread failed)
@@ -412,7 +414,8 @@ function Invoke-ParallelProcessing {
                     }
                 }
                 
-                if (-not $jobHandled) { # Catches 'Completed' with no data
+                if (-not $jobHandled) {
+                    # Catches 'Completed' with no data
                     $finalIdentifier = "UnknownJob"
                     WriteLog "Job $($completedJob.Id) completed with state '$($completedJob.State)' but had no data."
                     $finalStatus = "$ErrorStatusPrefix No Result Data"
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Applications.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Applications.psm1
index d833f70..21393d5 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Applications.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Applications.psm1
@@ -300,7 +300,8 @@ function Invoke-CopyBYOApps {
         -CompletedStatusText "Copied" `
         -ErrorStatusPrefix "Error: " `
         -WindowObject $State.Window `
-        -MainThreadLogPath $State.LogFilePath
+        -MainThreadLogPath $State.LogFilePath `
+        -ThrottleLimit $State.Controls.txtThreads.Text
         
     # Final status update (handled by Invoke-ParallelProcessing)
     $State.Controls.pbOverallProgress.Visibility = 'Collapsed'
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Config.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Config.psm1
index 3b40fbb..b12a99e 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Config.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Config.psm1
@@ -89,6 +89,7 @@ function Get-UIConfig {
         UserAppListPath                = "$($State.Controls.txtApplicationPath.Text)\UserAppList.json"
         USBDriveList                   = @{}
         Username                       = $State.Controls.txtUsername.Text
+        Threads                        = [int]$State.Controls.txtThreads.Text
         Verbose                        = $State.Controls.chkVerbose.IsChecked
         VMHostIPAddress                = $State.Controls.txtVMHostIPAddress.Text
         VMLocation                     = $State.Controls.txtVMLocation.Text
@@ -272,6 +273,7 @@ function Update-UIFromConfig {
     Set-UIValue -ControlName 'txtFFUCaptureLocation' -PropertyName 'Text' -ConfigObject $ConfigContent -ConfigKey 'FFUCaptureLocation' -State $State
     Set-UIValue -ControlName 'txtShareName' -PropertyName 'Text' -ConfigObject $ConfigContent -ConfigKey 'ShareName' -State $State
     Set-UIValue -ControlName 'txtUsername' -PropertyName 'Text' -ConfigObject $ConfigContent -ConfigKey 'Username' -State $State
+    Set-UIValue -ControlName 'txtThreads' -PropertyName 'Text' -ConfigObject $ConfigContent -ConfigKey 'Threads' -State $State
     Set-UIValue -ControlName 'chkBuildUSBDriveEnable' -PropertyName 'IsChecked' -ConfigObject $ConfigContent -ConfigKey 'BuildUSBDrive' -State $State
     Set-UIValue -ControlName 'chkCompactOS' -PropertyName 'IsChecked' -ConfigObject $ConfigContent -ConfigKey 'CompactOS' -State $State
     Set-UIValue -ControlName 'chkUpdateADK' -PropertyName 'IsChecked' -ConfigObject $ConfigContent -ConfigKey 'UpdateADK' -State $State
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1
index cd00641..74f17b1 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1
@@ -633,7 +633,8 @@ function Invoke-DownloadSelectedDrivers {
         -CompletedStatusText 'Completed' `
         -ErrorStatusPrefix 'Error: ' `
         -WindowObject $State.Window `
-        -MainThreadLogPath $State.LogFilePath
+        -MainThreadLogPath $State.LogFilePath `
+        -ThrottleLimit $State.Controls.txtThreads.Text
 
     $overallSuccess = $true
     $successfullyDownloaded = [System.Collections.Generic.List[PSCustomObject]]::new()
@@ -670,10 +671,10 @@ function Invoke-DownloadSelectedDrivers {
                 $make = $makeLookup[$modelName]
                 if ($make) {
                     $successfullyDownloaded.Add([PSCustomObject]@{
-                        Make       = $make
-                        Model      = $modelName
-                        DriverPath = $driverPath
-                    })
+                            Make       = $make
+                            Model      = $modelName
+                            DriverPath = $driverPath
+                        })
                 }
                 else {
                     WriteLog "Warning: Could not find 'Make' for successful download of model '$modelName'. Skipping from DriverMapping.json."
@@ -722,7 +723,7 @@ function Invoke-DownloadSelectedDrivers {
                         }
                         'HP' {
                             $modelObject = @{
-                                Name        = $driverItem.Model
+                                Name = $driverItem.Model
                             }
                         }
                         'Lenovo' {
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Handlers.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Handlers.psm1
index 3e74e2e..a25683a 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Handlers.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Handlers.psm1
@@ -2,6 +2,69 @@ function Register-EventHandlers {
     param([PSCustomObject]$State)
     WriteLog "Registering UI event handlers..."
 
+    # --------------------------------------------------------------------------
+    # SECTION: Shared Input Validation Handlers
+    # --------------------------------------------------------------------------
+    # Define a shared event handler for TextBoxes that should only accept integer input
+    $integerPreviewTextInputHandler = {
+        param($eventSource, $textCompositionEventArgs)
+        # Use a regex to check if the input text is NOT a digit. \D matches any non-digit character.
+        if ($textCompositionEventArgs.Text -match '\D') {
+            # If the input is not a digit, mark the event as handled to prevent the character from being entered.
+            $textCompositionEventArgs.Handled = $true
+        }
+    }
+
+    # Define a handler to validate pasted text, ensuring it's only integers
+    $integerPastingHandler = {
+        param($sender, $pastingEventArgs)
+        if ($pastingEventArgs.DataObject.GetDataPresent([string])) {
+            $pastedText = $pastingEventArgs.DataObject.GetData([string])
+            # Check if the pasted text consists ONLY of one or more digits.
+            if ($pastedText -notmatch '^\d+$') {
+                # If not, cancel the paste operation.
+                $pastingEventArgs.CancelCommand()
+            }
+        }
+        else {
+            # If the pasted data is not in a string format, cancel it.
+            $pastingEventArgs.CancelCommand()
+        }
+    }
+
+    # List of TextBox controls that require integer-only input
+    $integerOnlyTextBoxes = @(
+        $State.Controls.txtDiskSize,
+        $State.Controls.txtMemory,
+        $State.Controls.txtProcessors,
+        $State.Controls.txtThreads
+    )
+
+    # Attach the handlers to each relevant textbox
+    foreach ($textBox in $integerOnlyTextBoxes) {
+        if ($null -ne $textBox) {
+            $textBox.Add_PreviewTextInput($integerPreviewTextInputHandler)
+            [System.Windows.DataObject]::AddPastingHandler($textBox, $integerPastingHandler)
+        }
+    }
+
+    # Add specific validation for the Threads textbox to ensure it's not empty and is at least 1
+    if ($null -ne $State.Controls.txtThreads) {
+        $State.Controls.txtThreads.Add_LostFocus({
+                param($eventSource, $routedEventArgs)
+                $textBox = $eventSource
+                $currentValue = 0
+                # Try to parse the current text as an integer
+                $isValidInteger = [int]::TryParse($textBox.Text, [ref]$currentValue)
+
+                # If the text is not a valid integer OR the value is less than 1, reset it to the default value '1'
+                if (-not $isValidInteger -or $currentValue -lt 1) {
+                    $textBox.Text = '1'
+                    WriteLog "Threads value was invalid or less than 1. Reset to 1."
+                }
+            })
+    }
+
     # Build Tab Event Handlers
     $State.Controls.btnBrowseFFUDevPath.Add_Click({
             param($eventSource, $routedEventArgs)
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Initialize.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Initialize.psm1
index 02f5365..a63a1a3 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Initialize.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Initialize.psm1
@@ -95,6 +95,7 @@ function Initialize-UIControls {
     $State.Controls.txtFFUCaptureLocation = $window.FindName('txtFFUCaptureLocation')
     $State.Controls.txtShareName = $window.FindName('txtShareName')
     $State.Controls.txtUsername = $window.FindName('txtUsername')
+    $State.Controls.txtThreads = $window.FindName('txtThreads')
     $State.Controls.chkCompactOS = $window.FindName('chkCompactOS')
     $State.Controls.chkOptimize = $window.FindName('chkOptimize')
     $State.Controls.chkAllowVHDXCaching = $window.FindName('chkAllowVHDXCaching')
@@ -206,6 +207,7 @@ function Initialize-UIDefaults {
     $State.Controls.txtFFUCaptureLocation.Text = $State.Defaults.generalDefaults.FFUCaptureLocation
     $State.Controls.txtShareName.Text = $State.Defaults.generalDefaults.ShareName
     $State.Controls.txtUsername.Text = $State.Defaults.generalDefaults.Username
+    $State.Controls.txtThreads.Text = $State.Defaults.generalDefaults.Threads
     $State.Controls.chkBuildUSBDriveEnable.IsChecked = $State.Defaults.generalDefaults.BuildUSBDriveEnable
     $State.Controls.chkCompactOS.IsChecked = $State.Defaults.generalDefaults.CompactOS
     $State.Controls.chkUpdateADK.IsChecked = $State.Defaults.generalDefaults.UpdateADK
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Winget.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Winget.psm1
index 57d8648..c5449c9 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Winget.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Winget.psm1
@@ -155,12 +155,12 @@ function Search-WingetPackagesPublic {
         # for large datasets as it avoids holding complex objects in memory and bypasses the
         # expensive formatting system for the raw results.
         Find-WinGetPackage -Query $Query -ErrorAction Stop |
-            Select-Object -Property @{Name = 'IsSelected'; Expression = { $false } },
-            Name,
-            Id,
-            Version,
-            Source,
-            @{Name = 'DownloadStatus'; Expression = { '' } }
+        Select-Object -Property @{Name = 'IsSelected'; Expression = { $false } },
+        Name,
+        Id,
+        Version,
+        Source,
+        @{Name = 'DownloadStatus'; Expression = { '' } }
     }
     catch {
         WriteLog "Error during Winget search: $($_.Exception.Message)"
@@ -731,7 +731,8 @@ function Invoke-WingetDownload {
             -CompletedStatusText "Completed" `
             -ErrorStatusPrefix "Error: " `
             -WindowObject $State.Window `
-            -MainThreadLogPath $State.LogFilePath
+            -MainThreadLogPath $State.LogFilePath `
+            -ThrottleLimit $State.Controls.txtThreads.Text
 
         # Final status update is handled by Invoke-ParallelProcessing, but we need to re-enable the button
         $State.Controls.pbOverallProgress.Visibility = 'Collapsed'
@@ -754,10 +755,10 @@ function Update-WingetVersionFields {
         [string]$moduleText
     )
     $State.Window.Dispatcher.Invoke([System.Windows.Threading.DispatcherPriority]::Normal, [Action] {
-        $State.Controls.txtWingetVersion.Text = $wingetText
-        $State.Controls.txtWingetModuleVersion.Text = $moduleText
-        [System.Windows.Forms.Application]::DoEvents()
-    })
+            $State.Controls.txtWingetVersion.Text = $wingetText
+            $State.Controls.txtWingetModuleVersion.Text = $moduleText
+            [System.Windows.Forms.Application]::DoEvents()
+        })
 }
 
 Export-ModuleMember -Function *
\ No newline at end of file
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.psm1
index 48eef85..d74a39c 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.psm1
@@ -112,6 +112,7 @@ function Get-GeneralDefaults {
         FFUCaptureLocation             = $ffuCapturePath
         ShareName                      = "FFUCaptureShare"
         Username                       = "ffu_user"
+        Threads                        = 5
         BuildUSBDriveEnable            = $false
         CompactOS                      = $true
         Optimize                       = $true