I have the design pretty well finished, I still have to make the adjuster and finish measuring everything as well as making flats so I can tighten it down, but I think it will work out. I will safety wire it in place to make sure it doesn't come off and ruin my day As far as I know, the center nut does not have to deal with great stresses besides the one required to release the clutch so even an alloy nut should be good enough. In my friend's shop there is a Norton with a cluch so effortless you could swear it was on a 50cc yet it does not slip at all, I am shooting for something as good if not better.
Jean
Jean