i have a 2007 500 sportsman. i was ridding the other day on some trail. nothing to bad. i got back on the road and noticed that the clutch had started slipping. in high gear, it takes off fine but starts slipping around 10 mph, i can let off the throttle a little and it will grab and run fine. i put a new belt on and same thing. the same thing happens while in low. just at a slower speed. please help.