Are the starter gears for all years the same? I have an S650 engine, which is a '72, that has no starter or starter gears at all. Someone wanted to shave a pound or two off the gross weight so they removed everything that's used by the electric starter and plugged the starter hole. I'd like to eBay those parts but I don't know if they changed any of that when they went to the 18/36 tooth crank/cam. I'm going to post this on other 650 forums as well. Thanks