I had Wayne rebuild the engine and he told me that the flywheel would work. When I went to put it on, the threads on the crankshaft begin before the flywheel. So the pinion gear doesn’t reach the end of the threads because the flywheel is in the way... This puts too much force on the flywheel causing it to freeze up. Without the flywheel, the motor turns fine. It has all new internals - piston, bearings and etc. I just think that this particular flywheel is too wide for the shaft...