Had a Kenmore dryer last week where the drum wouldn't turn, and the usual suspects checked out fine. Turns out the plastic glides on the front drum ring were so worn they were letting the whole drum sag and bind. Replaced those and a $3 roller, good as new. Anyone else run into that one?
You said "plastic glides on the front drum ring". Those are usually called the front drum slides or pads. Good catch on finding that wear though, it's an easy one to miss.