Heard a noise this afternoon. Sounds like a piece of wood stuck between pully and belt. Not the problem, I checked. Belt pulley on arbor is hot and so are the belts. The bearings, arbor and belts are relatively new from Powermatic, maybe 5 years. Saw has not been used very much, its a home shop. Saw is the older mid 70's model and the arbor assembly is the new one. Does the hot pulley indicate the outside bearing is going bad? Like I said, it has not been used very much since I rebuilt it. Any and all help is appreciated. Thanks, David