I am looking for a serviceable crankshaft for an IO-360A1A. This is a constant speed hollow crank, but a solid crank would suffice since I am converting the engine to fixed pitch. So, could you engine gurus tell me which other engine model cranks will fit the A1A? I figured if I have more options while looking, I'll stand a better chance of finding something rather than solely searching for an A1A crank....