My Maytag Centennial washer was making a hideous noise sometimes while agitating, especially during the rinse cycle. It also had a weird plastic sawdust smell. I troubleshot the problem and the pulley wheel was rubbing on the cover. In addition, evidently a cork got stuck in there and it was chewed up, lots of cork dust under the machine, which explains the sawdust smell. The various sites addressing the problem said to tighten the nut which should raise the pulley up so it doesn't rub on the cover. But.. and there is always a but.. the nut seems fine and will not move, and when I place the cover on, not even attached with the screws, the pulley still touches it. I ran a small load without the cover, no noise. Can I keep running it without the cover?