i was wondering if the tailshft bearing would be cosidered part of a transmission rebuild. today i took my driveshaft out and you could move the tailshft up and down and side to side.could that be the bearing or a bent tailshaft? i think the tranny shop is trying to get one over on me. i need help my warrnty is about to run out. i've already replaced motor mounts,tranny mount,u joints,and had the rearend checked out and it was good.what does everyone else think i'm tired of this vibration.thanks to everyone.