KDE 3.0.4 printing top margin on US/Letter

Hello all... Since setting up printing on SuSE 8.0 with KDE 3.0.4 and CUPS to a networked HP 4100, it insists on printing with the top of the "printed page" off the physical page. This happens printing out docs from kmail, and Konqueror, and probably other KDE apps as well. I've tried adjusting the margins through the YAST CUPS setup, hand editting /etc/cups/ppd/lp.ppd, searching through google, linuxprinting.org, and everything else I can think of. I'm _not_ a newbie, but this is my first try using CUPS, although I'm not sure if CUPS is the problem or not. The YAST sample page comes out ok. Could some kind person please help me? If there is more info that I can give, I'd be glad to. Thanks! -Nick