i got an 05 prairie 360 i rode it for about 4 hours and shut it off. i brought it into the shop to work on it because it would lose power and backfire and a quarter throttle. i took the carp off and cleaned it while apart i went ahead and put a jet kit in it. i put it back together and it still did the same thing. so i changed the spark plug still didnt help. so i drained all the gas out of the tank and the carp and put new in. it still did the same thing. does anyone have any other ideas.