Watched the on site repair video, which was very helpful. I placed the dryer on a tarp in the family room prior to dis-assembly. Using the putty knife to push in the spring latches holding down the top lid, and propping it up while removing the 2 screws, holding the front, disconnecting the wires to the light and door switches, noting the color coding of the wires. Removed the front drum support, drum to get access to the rear drum support rollers (2ea) and the idler pulley wheel. You will need snap ring pliers to remove the rollers. Also note the configuration to the drum belt. Placed a small amount of bearing grease on the rollers spindles and re-installed the rollers. Reinstalled the drum, belt, front drum support, hand spin the drum to check belt and drum. Reinstalled the front and wires, snap down the top lid and reconnected the dryer to laundry room utilities. Test run and Wa-La, a quiet dryer. I'm thinking the noise came from the idler pulley wheel, or one of the rear drum support rollers, but couldn't tell by looking at either of them. So it's a good idea to replace all three rollers.