xx diff rebuild....nightmare!

[liam]

so ive been having trouble with my diff rebuild

this diff is in my "good" gearbox, lovely mesh on all the teeth etc, whereas my "bad" box is all rough etc...

anyways, since i took the good diff apart i just cant seem to get it back to a point where it will tighten properly. I must have rebuilt it 20 times, even tried a bfast kit!

what happens is the locking nut in the diff outdrive keeps threading and ive been through a new diff kit (A3078)aswell

ive been doing it by the book but the problem remains and whats really annoying the old crap diff seems to go together with no problems.

been very frustrating.

might take it to my LHS for anothe go but would like to avoid the service charge!

Any ideas?

thanks

liam