First, you would probably want topost this question to the VROC main board. You'll probably get a more informed answer. http://www.vroc.org. Secondly, 1500/1600 kawasaki engines can have 2 issues. pre-2000 models have a plastic oil gear that usually fails. The other thing are the cam chain tensioners. I know of people that got over 90k out of their Nomads, and I know of on eguy that has well over 100K out of his 800 Classic. I say run it until it starts burning oil.