Vibration/Noise on Decel

[Kevin 1G Drummer]

I would assume carrier bearings on the drive shaft like you said. When I launch my car I can hear the driveshaft thumping, and on decelleration I can hear it making a little noise sometimes. A good way to check is to grab the driveshaft and see how far it moves in the bearings. On my car, it moves quite a bit inside the bearing case.