Before I ordered any parts, I opened the dryer and checked all parts that were worn and found the shaft with the bad roller was out of round and some of the tri locks were missing. The belt showed signs of wear as did the front bearing rings, so these are the parts I ordered. After cleaning all the lint from the chute and dirt from the motor, etc, I inspected and found everything else in good condition.The repairs took me a little longer since I'm 85 yrs old and don't move or bend as good and our laundry room is narrow and cramped. One thing I have going in my favor, my kids and I used to pick up washers and dryers, repair them in our garage and resell them. Your videos were very helpful also as reminders. Thank you for posting them.