incessantly annoyingly squeaky dryer

Take out 2 philips screws in lint trap holder on top. Use flat screwdriver to pry up front left and right of dryer top near outside edges and tilt up out of the way. Remove 2 push-on AC connectors on door switch and remove plastic clip holding wires to dryer's front top metal edge. Remove (2) 5/16" sheet metal screw on inside top left and right edges to free up front panel. Lift front panel about an inch and it'll then pull off. It helps to have a second person to help hold or remove the drum at this point. It took 3 times for me to guess right on the squeak. First time I replaced the belt, second time I replaced these rollers, third and final time I replaced the idler pulley, the shaft of which had worn completely off so clearly i can't figure out how we didn't see (or hear) it the first two times! Dri-Slide lube helped stop the squeaking the first two times, but it always returned until this time, now I have a thoroughly rebuilt dryer for the next generation! (PS vacuum out the bottom of the dryer while it's open to remove both lint and greasy roller shavings - do this FIRST and you'll have cleaner hands & clothes!)