Our family has been tormented by a metal on metal sound from our dryer for months. It suddenly got worse and my wife wanted it fixed. I delved into home appliance repair heads first deconstructing my dryer to find the culprit. Props to my wife who did the research online to find the possible problem. Our problem was that the back bearing was none existent (who knows how long its been gone) and then support axle was running metal on metal again the bracket. You can tell from the pictures that it had been going on for quite some time.
I've got hand it to GE, despite all this carnage inside the dryer, it was still functioning quite well (just a little noisy). I was also pleased to find out that inside a dryer is not a mangled mess of wires and equipment but a very straight forward system that I am sure just about any man with a mechanical mind could figure out (so save yourself the service call).
I also want to express appreciation to the helpful people Affordable Appliance Service: http://www.affordableappliance.com They helped my wife initially determine what the problem might be and they sent us a replacement part at a very good price and very quickly.