I ordered the kit from Appliance pros. After taking the dryer apart and cleaning the inside of it from lent that had been collecting behind the drum for a couple of years. it was quite easy.The ball bearing was grinding a hole into the other mechanism. I do not know why they do not tell you grease you dryer or have it serviced at least once a year . this will prevent this from happening. it take more than cleaning out your vent to make your machines work properly.My machine works great now ,drys faster and is very quite.