Originally Posted by nota4re

Respectfully disagree with this statement. Fundamentally, it may be exactly the problem the guy is experiencing - where the set-up is has pinion angle within specs at the expense of caster. The result is a "squirrly" jeep or, at worst, the infamous death wobble.

I'd recommend to run as close to factory caster specs as possible - even to the point of having to swap out the factory CV driveshaft.

As I said before, it is balancing these two evils that is at the root of this problem. I'd suggest an iterative approach by dialing back in some caster and driving it to see if steering improves without geeting vibrations/noises from the fornt driveshaft. If the front driveshaft starts exhibiting problems before I achieved the right steering, I'd ditch the stock driveshaft.

Originally Posted by PhilD

Not to argue the point, but the statement is correct. Pinion angle should take priority over caster. I used the word "should", not "must". I don't disagree with what you say at all, and a safer handling vehicle is obviously a priority over potential wear issues etc.