Radeon8500 / Redhat 7.2 / XFree 4.2.0

Question

Hi I have a really weird problem with my Radeon8500 Gfx card. After installing XFree 4.2 the card is supported and runs nicely in all resolutions up to 1600x1200. The monitor is a Smile/KFC CA6919SL (Capable of 1600x1200@72Hz) Unfortunately it is impossible to get any higher refreshrates than 60Hz at 1600x1200 My Vertical and Horizontal rates are specified correctly in the config file. Im running at 1280x1024@75Hz currently, but i would really like some more dekstop realesate  :) Anyone knows how to force 70 Hz update in 1600x1200 ?? Thanks for any help, and i hope this is the right group. /Carsten Steffensen