OK...got less then 20 hours on the new BX 2360 and less then 5 hours on the deck. Cut the front yard this afternoon and was getting ready to start on the back.. ..looked down and saw that the belt had ridden up on the left outboard pulley and cut it's way through the plastic guard over top of that pulley. I don't know if something is not lined up and caused the belt to jump up or maybe a stick got wedged in there momenterly and it rode up on that. I don't THINK so, but I guess its possible. The belt has a deep "V" in its center and it rode up until that "V" centered on the upper rim of the pulley. Looks like a call to the dealer tomorrow is in order to see if they will cover it under warranty.