Asus P4S333 help!

[Extol]

Ok heres the problem I seem to have. Whenever I up the vcore it doesnt change anything. When I set the ven1 jumper to increase the voltage by 0.2v I get a default of 1.6. It reads 1.6 in the bios when the vcore it still at 1.5. Now heres where it gets screwy when I change the vcore nothing happens. I can bump it all the way to 1.7, but it still reads 1.6 in the bios. I have also tried the vmod to get a default of 1.7, and when the vcore is set to 1.7 it reads 1.8 in the bios. And then I take the vcore up to 1.85 it still reads 1.8. It's like I only seem to have two settings here. Has anyone else had this problem? And if so how did you solve it?

[DMI+RY]

Just finished Vmod and the only vcore option remained is 1.85. DO not forget to set 0.2V CPU raise jumper back to default, that really shouldn't matter.

Before vmod I had similar issue, for example with 0.2V jumper and 1.675V bios settings, in the bios it showed 1.74V and in WinXP Asus Probe it was about 1.8V. As you see neither one showed the expected 1.875 (1.675+0.2) but it was ok for benches. The only trouble I had (which basically make me do the vmod) is that with every cold boot I had to readjust vcore as well as FSB.
After vmod cold boot problem dissapeared and it is seems like all reading within the range 1.8-1.85v.