I feel your pain mine has been clunking here there occaisionaly and "shimmies" at about 70-75 mph and the other day while I was playin in the mud I couldn't get the diffy to lock. Amazingly enough I love that machine even though it has cost me alot of money and headaches. BTW check Rovers North they have their own non factory brand line called pro line and they are somewhat of a reasonable price