dryer knob broke off/clothes were getting rust marks on them

We followed Randy from Anchorage, AK's notes pretty much. Took off the top and front panels. Changed the drum glide and lower seal without any problems. Changing the belt proved more difficult. If it's not broke, I wouldn't change it. If you do, DEFINITELY pay attention to how it is looped around the pulleys before disconnecting it (I would take a photo). Definitely open the back of the dryer to do the belt - otherwise the pulley falls before you see how it is connected