CsClimbr
Ex-Climber with CAD
Those keys are cast and soft, if not tightened, will strip out. I have cut a slot in flywheel and installed a key several times. Make sure crank is cleaned well, more like a compression fit.
I’m down with dremeling out a slot and fabbing up a key to fit but how would I go about making sure the timing is on point, looks like the old key chewed up the exact point the flywheel day on it, maybe I could even advance it a degree or two but I can’t really tell where the original location/line up would have been