My 99' Grizzly 600 use to go 55-60 mph until i took it through the mud and got stuck. The water was up to the seat when i was stuck and it took a while to winch it out so mud got inside by the belt. After getting stuck it only went 30 mph so i replaced the belt, cleaned out the inside where the clutch and belt are, changed the oil, and cleaned out the air filter. It can now go around 35 mph which is not normal. Please Help!

Marcus
Osceola, Wi

99'Grizzly 600 stock
97' Big Bear 350 stock