When I print a boarding pass at home the second leg of the flight always gets messed up, with bar code from the second flight bleeding off the page. The standard printer page layout seems misaligned with respect to the AA template. I tried resizing the page layout to 105% and thereabouts, but I get weird extra pages. Is there a standard printing trick everyone knows about that I've missed? I know I can ask an agent to reprint it but sometimes timing at the airport is tight...

I'm on a Mac, using Safari.

(nothing came up with searches here and in the Technology forum)