Are you running a front locker?

If you jack up the front and then spin the front wheel with hub locked, you should be able to tell if the CV is binding up or not. If it is, just space the bump with some washers from ACE hardware or Home Depot. I have balljoint spacers that allow extra travel, but I wouldn't think with your setup this will be a big problem.

89 xcab 4x4 22re. 1.5" BJ spacers, 3" shackle and AAL + fender trim. 33x12.5 R15 MT/Rs, 15x10 rockcrawler streetlocks. 488 yukons by ZUK, detroit rear and true-trac front. 2 1/4" cat-back exhaust. Redline gear oil. Rear bumper by bentup.com.