Okay here is what I have here a 2008 TW200 with 4,000 miles on it. Had to replace the float due to someone's stupid fix on the carb. So no issues there. What is happening is, in 2nd and 3rd gears when you grab a hand full of throttle, very lack luster response. Engine rpms come up though not much any mph response. Kind of tells me of a clutch issue. Higher gears it is a bit better though still acts like it is slipping some yet. I want to pull the clutch pack and check the friction plates to see if they are glazed over. Maybe add a couple stouter clutch springs to improve the pressure on the plates. Not sure if an energy gag conserving oil was used in the engine. One other thing, the chain. parts fiche says 428HG 122link chain, I want to put a better chain on possibly a oring chain. Any suggestions on that?