I have a 2000 Deuce with @ 15,000 miles on it. I ride easy ( no burn-outs or anything like that). My bike developed a bad trans oil leak by the trans sprocket. I thought it was the output shaft seal until I tore it down and found that the sprocket was loose. Upon removale of the sprocket I found that both the splines on the sprocket and the output shaft were damaged. The sprocket having only @ 30% of the teeth left. Any input on this would be greatly appreciated.