I just today changed my levers, so encountered that nut on the clutch pivot pin. Several factors combined things make that nut/pin combo easy to strip ("perfect storm"):
- You cannot actually see the nut while trying to engage it and get it started to PROPERLY thread, so it is very easy to crossthread
- You have to use your FINGERS, NOT a socket to get the nut properly started. A socket, unless PERFECTLY aligned, can easily start it "crossthreaded"
- The nut is very small and hard to hold
- The nut's "locknut" feature adds to the festivities by making it harder to engage the threads to start
- Because the nut is "recessed", you are forced to use a socket to tighten it, which lessens the degree of "feel" that you have on the nut
- The fairing gets in the way while trying to ratchet the nut with a ratchet unless it's a miniature ratchet
- The nut's small size and thinness means that even a LITTLE too much torquing will strip it very quickly
Be very careful. Use a socket with a very small ratchet so that you have as much feel as possible. And remember that this nut is VERY easy to strip, so use Loctite instead of too much torque, to secure it.