I will have all the parts for my sons ad xxx nt Friday but still have a question that has not been answered. On the OS TR .12 the crankshaft that comes out of the engine has an drive hub on it that needed to be removed before I could install the collet but the collet is round and the crankshaft has two flat sides on it where the drive hub used to fit. Do I press the collet on it anyway. If so will it hold. Keep in mind that every engine that I own has a shaft that is round and this doesn’t look right.
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