have an 03 rev 600ho the rear arm that conects the the rear wheel to the tunnel keeps spinning the bolts out on the wheel side i looked at the arm and it looks strait and the hole doesnt look oblong or anything i was alco thinking it could be the berring in the wheel going bad but havent changed it yet anyone have any other suggestions?

That idler wheel shaft is one piece, so when you tighten the rear idler wheel bolts up make sure you have a hold of both at the same time (I usually do it with 2 people, makes it easier) to get both ends tight. If you don't do this you won't get the bolts tight b.c the shaft will be spinning. A bad bearing may possibly spin the bolts off if they weren't tight enough in the first place. Check you wheels though for sure, loosen track off, remove bolts then wheels. If the bearings feel even a little bit tight or not smooth, replace them. Hope this helps.