put 200 miles on in two days with no issues. next morning started sled, warmed it up for a few min, went down a straight trail for 4 miles and i was not getting full power. normally i dont use much over half throttle to get up and going 70 and i needed full throttle to get to 70. i wasnt getting that good jump in speed when the rpms were hitting 5-6k as usuall. i checked belt,didnt take off, but looked fine. probably 6oo miles on it. changed the plugs which were dry and white. still didnt seem right but a little better. by the end of my 25 mile ride it seemed to be back to normal. a little water in gas??? could a clutch spring be intermittent in going bad??? i know it still wasnt right rightaway after changing plugs so i dont think that was the problem but it did seem to clear itself up??? thanks for any input, i know it could be like 5 different things...