I replaced drum rollers, axle shafts and front bearing kit. Still had noise. Ordered Idler Arm, Belt Tension Pulley & Washers. I ordered parts at 3:30 pm on a Wednesday, received new parts at 11:30 am Thursday. The instructions & videos were very simple to follow and provided excellent tips. Back up and running with silence in an 1/2 hour. My 13 year old dryer is running like new again. Way cheaper than calling a repairman.