I disassembled the front bulkhead and lower panel and noticed that one of the glides was hanging off worn almost all the way through and the other was gone completely. Having on experience with dryers other than changing an element, I did a little internet investigating and found that this is a common reason for grinding. Using the model number, I identified the part and it was available online. Parts arrived within a few days and 10 minutes later, the dryer was good as new. Thanks!