I recently(300 miles ago) had 4.56 gears installed on my 2002 Wrangler.  Everything seemed fine, but I recently had it in 4 hi and noticed the front axle making a whining noise. I don't really notice it while driving, but when I'm coasting to a stop is when it's really noticeable. It doesn't drive funny, but the noise is a little disturbing. At first I thought maybe the oil was low but I took the fill plug out and it was full.  Any ideas? I haven't contacted the shop that did the install yet, I wanted to get some unbiased info first, and I wouldn't mind trying to fix it myself. I also have another question about lockers.  I was planning on putting a lockrite in my rear axle(dana 35), but have heard the ring gear is too wide to get the cross shaft out.  If I have to pull the carrier to do the install, can I just put it right back in without any hassle, or will it have to be setup all over again? Thanks.