When faced with this type of problem I use a $9 stethescope. It will pinpoint the problem. That means putting it on a lift with someone inside it and putting it in gear while you listen underneath. It's not my favorite place to be but that little stethescope will find the problem. I am guessing with the carrier (#3) they also did the R&P bearings.
I use a Jeep
You drive a car
94 I6 ZJ at 4", 33's and front locker and 4.11 gears. Swampy Bypass.
[B]Black Jeep Club Member Ver. 2 #51[/B]