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Message: [QUOTE="mr db, post: 1325443, member: 100778"] alright guys thanks alot for all the help. Yea ill def change the piston and rings every 20 hrs. And yea i was thinking the same about the fact that something might be wrong with it. Im going to take it up to the local dealer and have them check everything b4 i buy it. I'd like to put a tach/speedo/hour computer on it. Any suggestions? He says he never changed out the clutch so I am wondering if that will need to be changed. Do you normally use the OEM or a HP clutch? Lastly I've heard alot about "powervalves" on 2 stokes. What are they and do they require special maintenance or anything? [/QUOTE]