Since i bought my bike, First gear sounds like it's missing a tooth. (It reminds me of a clangy bell they put on a fork lift wheel at a summer job in high school). So I've been attempting at splitting the crank cases, so i could investigate the gear issue, both the Haynes, Clymer, and Yamaha Manuals all state "Remove bolts in order from 18 to 1. the number is stamped next to each bolt/nut." I don't know about you guys, but my bike is from 1978 and has had it's fair share of greasy junk on mostly the bottom of the engine. The previous owner didn't take the best care of it. That being said, it's like finding a needle in a haystack to find these little numbers. (is it a 6 or a 9?) Does anyone know what number the bolts/nuts are, and their locations? Can I leave the alternator and clutch assembly on? Any information would be extremely useful!