M32 gearbox doesn't worry me, I did some research on this box and it does suffer bearing problems on mainly 6th gear due to heat build up or lack of lubrication of the bearing, adding more oil helps.
Found a company on a VRX forum who do lots of these boxes, they are charging approx. £350 to change bearing and renew oil for a recommend grade.
Pay a little more and they upgrade the box.
New box sounds a bit ott, replacing a shot bearing sounds less intimidating than forking out £1600.
Stuck 2.8lts of MT90 oil in mine as a preventative maintenance measure.
No bearing noise yet, but I tend to take it easy esp in 2nd gear..
Did in the end find the heater fan sound was actually a worn bearing, blast.
Last edited by Bruce100; 10-01-15 at 10:37.