Performed major surgery on the beast today and found the culprit. 4th gear Pinion gear had a tooth completely sheared off. Going to replace the gear it engages too. A few other gears showed marks that look like machining marks, is this normal? Also as mentioned before, replacing the clutch as the ring gear attached to it had a chip, probably caused by the tooth floating around. I've been good about changing oil, (use the non-synthetic Yami stuff) so I'm not sure why this happened. I have missed a shift in a race before and had to slam it in gear, so maybe this is the cause? Thinking about going to the Mobil 1, Im also concerned about will the trans be suspect now? Has anyone had this happen to them, get their trans fixed and had the bike be trouble-free afterward? Thx in advance.