I just bought a used 1/3 H9 Cap with this engine. It shakes terribly. I checked prop and spinner bal. and they are good. I indicated crank. it was TIR .007 at the pickup ring and .020 out on the prop hub. I tried calling Bme this morning a couple of times but no answer. anyone had one of these cranks straightened or replaced? If so what was the cost. Anyone updated one of these motors? Thanks, Rick.