Margin settings are not available when fit to page is selected. If you changed to scaling and you still can't set margins, then something is wrong with your printer driver and I suggest you download the latest driver version and install it. Most default printer settings center the content and auto fit everything.
When I go to print the panel does not show a margin preference. By stopping "fit to page" I managed to bring down the printed page a little, but still not enough to make a decent copy. Thanks for your help.