Dark marks on clothing; clothing sticking between drum and front panel
Others with the same problem of dark marks on clothing suggested replacing the white and the grey drum slides that slip into the front drum bearing unit. When I open up the dryer, I did find that both the white and grey drum slides on one side of the front drum bearing piece had completely worn away, and some of the drum bearing piece was also worn away. I had decided in advance to order both white slides, both grey slides, a new felt seal, and the front drum bearing piece. Possibly I could have reused the old front drum bearing, but the replacement was cheap enough. Three bits of advice: 1) if you replace the felt seal, make sure you get it tucked behind the clips on the door panel; 2) if you replace the front drum bearing piece, once you have the dryer put back together, reach up and pull the plastic drum bearing toward you to be sure it is fully snapped into place; 3) after you replace the slides or felt, the drum will make mild rubbing noises as it turns, so run the dryer with no heat for about 30 minutes to seat the parts.