Replaced rear and front bearings, idler pulley, and belt. After taking the dryer apart, it was obvious that only the front bearings needed replacement but decided if I was going to tackle the project I wanted to only do it once. Called support who pointed me to a parts kit which was a great savings. Videos were excellent. Took me 3-4 hours, in part because a lot of lint had built up over time and needed to be cleaned out.