Ordered the idler pulley wheel on Friday it arrived on Saturday!
Took the top and back off of the dryer. The back was a little tricky; I had to disconnect the a/c line and remove a clip by the exhaust vent. Once I had access to the back the rest was easy; remove the clip and washer holding the pulley and put the new one on. Using an electric screwdriver will save you a lot of time! It took me about an hour. Someone familiar with appliances could certainly do it in a shorter time.