Painfully loud squeaking

After taking apart the machine (applianceaid.com has slideshows for most major appliances - very comforting and reassuring - highly recommended), I used a shop-vac to clean up all lint and dirt. After getting the retainer ring off the drum roller shaft (snap ring pliers highly recommended), I replaced the drum roller along with the glides which were completely worn through (rivet gun required). I reassembled the dryer to find that the drum wouldn't turn, so I placed another order for the other drum roller and replaced the belt too. Back in business.