Update
ok, well, I am not sure how to post pictures on here, so I will try my best to explain it. the old piston that came out after the rebuild seemed to look a little funny. there was carbon buildup on the top of it, but only in the shape of a triangle. the wide base of the triangle was along where the exhaust exits, and it came to a point in the center of the piston. could this be due to a sticky KIPS valve, as that would seem like it may explain away my problems. how do these normally function, and how should I check it/clean it/fix it? thanks so much
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