4crawler, I have to run a couple of things past you first.

First when I installed the lift the vib was real bad (worse than it is now) I took loose drive shaft and made sure the yokes were timed, yokes in alignment, not off a little or 90 degrees out of sink of each other with a flat straight piece of wood.

So I installed some thick washers to bring down cross member about 3/4 to 1 inch and the problem was less severe. If I take those spacers out man you talk about some bad vib. noise. I agree that the front of the diff. needs to come up a few degrees.

Don't wanna use longer shackles, will get "back jacked up look" no good. What I was thinkin was to take out the "over load" leaf which is a thick piece (note I don't haul anything more than a cooler with beer/full size spare/little bit tools) and get some of your angled shims (with your recommendation to which ones I should get) and angle the front of the pinion up a few degrees. Can you help me out?? What do you think about the idea???