Tom
Did you lower your car at all ? Why is it you ended up with 0deg in the first place ?
The reason I ask is that I lowered my car and have the same vibrations as you describe and have long been suspect of it being the pinion angle or the rear center section. When I visably look at it, it apprears to be straight in line but I am not sure how to appropriaty measure it. The cars been sitting for a few years due to other things in my life,but I am trying to revive the passion
I guess I should do some searching to figure this out before I do some real damage
Thanx for bringing up a good point,
Ryan