Purchased belt, figured it was getting loose and stretched out, never been changed and dryer is ???? years old. Upon disassembly to replace belt, I inspected all pulleys, rollers, guides etc. Found the belt tensioner pulley was difficult to spin and had a groove worn in it from the belt. Also found the front drum guides were fairly well worn and the felt pads were missing. Placed a second order for the pads, guides, and tensioner. Replaced all parts, installed new belt, and reassembled.