Not sure what is wrong with my Kawi Prarie 400. I was playing in the mud a couple weeks ago and got stuck in some gumbo, after rocking back and forth side to side and every other direction i was finally able to get out. I did notice that there were times that the front tires were not spinning and i would then switch directions. Here is the problem. Any time since then I get to more than 1/2 throtle I get one hell of a bang from my machine. I dont feel it loading up and the cv joints are intact. Is it possiable that I put a flat spot on the belt while i was on the throttle and the tires were not spinning? Or do i need to look in another direction? Any help would be appreciated.