Hey guys, new to the forum, and new to Arctic Cat Atvs. Glad to be here, I have learned a lot from what I have read, but couldnt find quite what I was looking for. I picked up a used 06 500 TBX from my bosses for practically nothing because I was told the transmission is shot. Heres what I know as I wasnt there when it happened. Someone was pulling a drag, to drag the gravel parking not, in 4wd low, through some deep heavy mud. As they were driving through, suddenley something gave out, and caused a grinding noise, and said it felt as though it went into neutral. Thats all I can get out of the guy driving it. So I have it home now, and have raised it off the ground. In nuetral, I can freely spin the tires and both drive shafts spin freely. When I shift into H L or R, I try to spin the rear tires(forgot to mention, the machine is not running currently, because some part timer thought he knew how to pull this machine apart, started on it and quit), the secondary clutch shaft begins to spin, but it will skip, as though a gear is stripped. Occasionally it will spin nicely, other times, it locks the tires completley and have to back off pressure, and other times I can spin the tires in gear and the shaft does not spin at all. Any ideas of what this can be?? Im being told Im going to have to split the motor, and dig in. Is this true? Also, is it a complex job ? I do have some knowledge of digging into these things, just dont want to unless I have to. Sorry for such a long post.