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Message: [QUOTE="Dogz, post: 755469, member: 45914"] I was just diggin into the kdx for a top end rebuild as I have no idea when or if one was ever done! I decided to do a compression test for a before and after comparison. Mine currently has between 200 and 205 psi, Manual says 145-220 psi is good. I tested a few times just to be sure. Is the only real way to tell to keep ripping it apart and measure bore,piston, ring end gap,etc. Or should I be happy with 200+ psi compression and leave it alone? I'd rather put the money into gold valves + new springs. Thanx for info about wiseco pistons. Are wisecos manufatured to take into account the extra clearance required? Say I need a B sized piston from Kawi, would the B or next size up from stock wiseco be what I need? Thanx Again [/QUOTE]