'41 FL bottom end

JIMS makes nice sprocket shafts.  Always measure them (they can be undersized)  If the screw for the crank pin lock is wiggly or loose, I don't use the lock.  S&S doesn't use them.  You don't want the lock to come loose and fly around in there.  Use locktite and proper torque on the nut and you'll be ok for street engines.