2manyZs is right, both nuts are torqued up as he says, your problem must lie elsewhere. BTW, I'm familiar with the Nissan five speed having just recond my own, which job is not to be tackled without a workshop manual IMHO.

Staking the mainshaft nut correctly is important because they do tend to loosen up in use. I used some removable type Loctite on the threads as well, don't use the permanent Loctite because if the nut has to be removed again later it could strip the threads.

Well... I wasn't in entirely uncharted waters. I had DL'd some directions (from a Nismo Comp manual or something?) when I did the roadster trans. And really... the manual transmission is pretty darn simple to work on once you've done one. The biggest piece of info I gathered from the process is you have to take it <u>completely</u> apart, there's no middle ground.

The torque-on-assembly makes a TON of sense - I just basically put it back together, tightened it down with a monster crescent wrench, and all was glorious... until the nut backed off. Simply retighteneing it the second time through led to the binding I spoke of.

I suppose one solution would be to tear it down and put it back together again. Yeah.. right!

K