Hey everyone, I had an ARB diff cover installed on my currently stock suspension TJ. The ARB Diff cover hits the track bar right where it mounts to the frame.
I called ARB tech support (they were very nice

) and they told me they have heard of this issue on some TJs, and that there are variances in some of them but that he couldn't tell me what specifically is changing to make them hit. In either case, I'd love to find a solution.
I can remove the ARB cover, but I would really love to be able to keep it since it helps strengthen the diff, and of course it looks cool

I don't think grinding down on the diff cover and/or trackbar would work very well because of the way it clearances. What really needs to happen is to either get the axle pulled/rotated back or get the trackbar forward.
If I get adjustable upper control arms I know I could rotate it back, but I am afraid I might get myself into too much caster angle. I tried measuring my current caster (it involved some painters tape, tape measures, straight edges, speed square, and lots of double checking) and as far as I can tell I'm right around 9 degrees currently. How much caster angle would be "too much"? I'd probably need to rotate it quite a bit to get enough clearance.. id probably be somewhere in the 13-15 degree range. i'm guessing that would be way too much.
I really want to keep my purdy red diff cover, but I don't want to have to buy 4 new control arms... that would be like 600 bucks

Anybody have any wonderful ideas, or suggestions on max allowable caster?