Printing Scaled Framework Element to XPS

I have set up the following routine to print a scaled version of a FrameworkElement:

public void PrintUI(FrameworkElement element)
{
	PrintDialog printDialog = new PrintDialog();
	printDialog.PrintQueue = PrinterItem.Printer;
	printDialog.PrintTicket.PageOrientation = PageOrientation;
	printDialog.PrintTicket.PageMediaSize = PageMediaSize;
	System.Printing.PrintCapabilities capabilities = printDialog.PrintQueue.GetPrintCapabilities(printDialog.PrintTicket);
	double scale = Math.Min(capabilities.PageImageableArea.ExtentWidth / element.ActualWidth,
							capabilities.PageImageableArea.ExtentHeight / element.ActualHeight);

	Transform currentTransform = element.RenderTransform;
	double currentWidth = element.ActualWidth;
	double currentHeight = element.ActualHeight;

	element.RenderTransform = new ScaleTransform(scale, scale);
	Size size = new Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);

	element.Measure(size);
	element.Arrange(new Rect(new Point(capabilities.PageImageableArea.OriginWidth, capabilities.PageImageableArea.OriginHeight), size));

	printDialog.PrintVisual(element, VisualName);


	element.RenderTransform = currentTransform;
	size = new Size(currentWidth, currentHeight);
	element.Measure(size);
	element.Arrange(new Rect(size));
}

The PrintQueue, PageMediaSize, and PageOrientation are selected by the user. This seems to work ok for Adobe PDF printer or my physical printer. When I try to use the XPS Document Printer the FrameworkElement gets scaled but the print does not seem to honor the page size specified in the ticket. So I end up with a portion of my scaled FrameworkElement showing up on a page that matches the size prior to scaling.

Is there a way that I can enforce the page size with the XPS Document Printer?