You missed the whole thing Ironmike said it came out to 109.5 adv 4 got 104.5 he wants 104 you could do it with a offset key for the cam. No 2strokes don't have cams but mine had a fixed electronic ignition with a max advance. By installing a offset key in the flywheel I was able to get 5 more degrees advance. It was a 1985 and really plugged up for emissions, but with some good pipes, carb work, ignition advance it ran good. 500cc 94.81hp and with a total weight of 320lbs that makes for a fun ride.
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