No need to get upset about a OWB going bad on a Hobby Grade Nitro Monster Truck!! You WILLbe replacing many more during the life of your rig. Besides CEN did ot manufacture the Drawn Cup Roller Clutch(OWB), another manufacturer did, and there is now way for CEN to know which OWB out of thousands will fail!So Call it luck of the draw that you got a faulty unit.