My big bear 350 was having this bad clunking noise and seemed to be jittering a lot.. dont know how to explain it but at high speed it didnt seem right. One day while riding it make a big clunk noise and i had to stop to check it out. The axle seemed fine. Then on the way home happened twice more. Then once finally while going almost top speed it clunked very bad and the back seized and sparks and all that came out, I noticed where the axles connect right by your foot on the left side was broken, the front axle joint right by the output area was bent and the spider thing had what seemed like grinded off edges. I was wondering where i can find the joint the spider goes into for the front axles but towards the back. Might sound confusing because im not 100% sure the names of everything but i think its called the "cross joint comp". Thanks for helping!