We disassembled the dryer and found three obvious things that needed fixing. The felt seal was wadded up and out of its track and old, the tension pulley was worn out and one edge missing and the rear bearing sleeve was worn thin and broken off inside the bearing race. The video's on appliancepartspros.com showing how to replace the parts was great. We had it half taken apart before we found this site but it helped a lot in reassembly. The parts we received were high quality parts as well. The only problems we struggled with were threading the holes in the parts that did not have threads already cut for the screws, trying to sandwich all the pieces together to install the rear bearing, and removing the keeper nut that's pushed onto the tension pulley shaft. (Keeps the pulley from coming off). The video makes it look easy but we had a hard time lining things up in our dryer drum. The chrome plate that goes inside the dryer drum with the outside bearing part. The video showed the tech using a nut driver to thread the screws into the parts but the screws provided were philips pan head screws. Be careful you don't jab a hole in your palm trying to put those screws in the first time. Make SURE you thread the screws in perfectly straight or you'll have a nightmare trying to get them started when you put the parts together later. Get your vacuum with hose attachment ready, now's the perfect time to completely clean all the lint out from around everything and prevent a fire. We used 2 sizes of philips screw drivers (medium and large), a medium flat screw driver, a torx driver, needle nosed plyers, rag, vacuum and a few drops of oil. They don't tell you to do this and some may say it's not a good idea but I put about three drops of oil on the tension pulley shaft to prevent wear on the pulley (it's plastic on metal). I also did the same with the plastic rear bearing sleeve (between the sleeve and the shaft the sleeve is permanently mounted on). Without that, I don't see how this would ever keep from wearing out the plastic. If you do the same, just use it sparingly on the rear bearing sleeve and don't get any on the heating coils. Any small amount of plastic-safe oil or light grease would go a long way to prevent you having to replace these parts again.