The vibzzz are killin me!

Another update. I have checked the pinion angle and I figure its pretty good. I have 1 degree up on the trans and 1.5+ down on the diff. I have 2.5 shims in the car now and it seem to be the best but it still has the vibes. Ive been from 1 degree to 4 degree down on the diff and the more I go the vibes seem to get worse. :banghead: