Originally Posted by Riding Rich
Well hammering could have damaged the bearings enough to cause premature failure.
Being too loose would be bad too.
I was able to slide my crankcase halves together over the shafts.
Wonder if the shaft wasn't bent a little.
No bearings ever got hammered on that engine. The one on my bike did get hammered but there was never any failure at all. And you are confusing crank shaft with clutch shaft. Personally I've never split an engine case.
I'd be glad to part with this engine however I'd have to charge more than Zoom would for a new one seein' as how attached I've become.