So I've been having this high-pitched squeaking coming from the Jeep's rear, and it's driving me nuts! It's been going on since roughly last Fall, but it gave me a break over the winter when it kind of stopped. Now it's back. It also goes away in wet weather like we've had this week in NJ. I thought that it could be associated with the new control arms I have since the SuperLift was installed last year, but I just ran across a TSB concerning rear squeaking. It says to replace the upper spring isolators. I have my doubts that the dealership will do it since the suspension has been modified. Isolators are not expensive either. So, what do y'all think? I guess they should be easy enough to replace. Should I just go ahead and replace all 4? Go with OEM, Moog, Raybestos, or what...?