Hi, I am about to machine the fly wheels for my 1/4 scale Galloway, and have a question about the keyway between them and the crankshaft. The plans call for a straight 1/8" keyway on the crankshaft and a tapered keyway on the flywheels held together with a tapered gib key. I have never broached a keyway before, but it doesn't seem too difficult. I have no idea how to broach a 1/8" per 12" tapered keyway on the flywheels except that you maybe do not press the last pass of the broach all the way through leaving a tapered keyway. Just guessing here. My other thought is to just cut them both straight and use a tapered key. If any one can help me with this I would greatly appreciate it. Thanks, John.