i was riding this afternoon on my week old busa, got about 500 miles on it, give or take, and i go to clutch up awheelie and the tire breaks loose for a split second and then the bike meaks the horrorific sound, like something breaks, a loud snap sort of, i thought maybe the chain skipped a tooth, the later on i just kind of gave the throttle a quick jerk, just goofing around an it did it again, the chain seems to have the propper amount of slack in it, any ideas?