mech seal

Ok, so I did the bypass on my '79 CX500D a couple of years ago, and I know I'll never give her up. But my son recently acquired a CX650 and we are in the middle of replacing the stator, cam chain, mech seal and starter clutch bearings (aka, the "quadruple bypass"). There will probably come a day...

First of all, I'm glad the camshaft is harder steel than the acorn nut that holds the impeller against the housing. After doing the mechanical seal two years ago, I stripped the acorn nut when putting it back on the impeller. I know I stripped it, because I never reached the correct torque...