Yeah, I know I missed a few of the old engineers, Wally, but I was just thinking on me feet !! Clem Daniels was another
Righto, Beezer and Triumph taper fit clutches, the late Max Evans of Caringbah Motorcycles put me onto this trick in the '60s, worked for me every time.
Clean the clutch hub and shaft then lap the hub to the shaft with grinding paste until it's a perfect fit, clean paste off.
THEN apply a thin smear of new paste to the shaft, fit hub and rotate 1 turn , take hub off shaft, clean out keyways, fit key and, leaving thin smear of paste on shaft, fit hub , give hub a smart smack on with a brass drift and hammer, fit nut and tighten, Bloody things didn't move after that
Foss