I have an 06 TRX350 FM with 27"X 12"X 12" Outlaws all around. I used an engine cool additive and I think it is causing my cluch to slip. Please recomend a fix; can I flush & refill? And what is the recomended oil weight & type? If new parts inside are needed please advise what should be replaced, and are you aware of a high performance clutch for this model bike? Thank you in advance.[/b]