More drive clutch Q's
 

Is there a difference between the crankshaft's on the Polaris? I picked up a used clutch (drive) to replace the one dad had when it spun on the shaft when the bolt came loose. This one slips on the shaft farther and will not tighten up before hitting the shield on the back side.

Just curious if there was differences or if the one I got had been honed out as it is just a bit more in diameter

Is that bronze bushing (where it slips on the crank) replaceable? It doesn't appear separately on the microfiche I've looked at.

Thanks guys for rehashing this with me again. I really need to get this thing back to going for dad.