Bought this 54" Husky new, and been really satisfied. But now, at 480 hours, I smelled rubber from the belt slipping on the right tranny. I managed to get it in the shop with it screeching. I jacked it up, and with brake off the left wheel will move slightly, but the right one did not budge. I took both fill plugs out, and can see that both have the right, and same amount of fluid I suppose it needs rebuilding. Any suggestions? Thanks