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Message: [QUOTE="1998RM250, post: 1372637, member: 99032"] Hey guys My 07' RM 250 felt weak in the kicker so I pulled to top end off. The piston looked fine, so I ordered a new set of rings and put it all back togather today. It still feels like it doesnt even have the compression of my old 98' RM 250, and doesnt seem to be running much better. I also cleaned the powervalve and checked the reeds while it was apart, I just dont understand whats up? Is it possible I needed a new piston as well? [/QUOTE]