Re: Tapered shims
Interesting. I'm no alignment guy, but the caster doesn't seem to be too far off. Like I said I think it is supposed to be 3 degrees on 76-79 CJs, but double check that with your shop. I was monkeying around with this issue when I swapped in my D44s b/c they have zero degrees of caster. I had an alignment shop tell me a degree or so of difference in caster from tha factory from what it was supposed to be wasn't uncommon. Yours could be off some from the factory or maybe off from the slightly longer shackles, or a combo of both. My guess is that the combo of the two (slightly off caster and 3/8 shackles) is your culprit, just like you thought. I would think 1-2 degree caster shims should help you return to center easier. The shims should have a hole in 'em for the spring centering pin to go through to make sure everything stays in place. Just my thoughts, maybe someone else has some better advice.