Driveshaft Freeplay

If its the bearing between the input and the main shaft, just replacing the bearing will only help for a while. There are two surfaces on the shafts that wear too all be it at a slower rate than the neddle rollers.

This is what disapoints so many people when they replace the bearings and the transmission doesn't quite sound like new. Often still having mild whining noise. Me included.

I fixed my noise by using 13mm thick Armaflex insulation http://novaplus.nl/TI/index.php?item=armaflex-ace-13-99_e--1-rol&action=article&group_id=9&aid=162&lang=NL on the floor and tunnel. Great sound proofing stuff.

Chas