Product review (5 stars): Good as new!
I thought my 10 year-old Duet was a goner when it began screeching so badly, no one could tolerate it being on.  After finding how-to videos on line about replacing rollers and belts, I decided to order this kid. Probably just one part was bad, but after going to all the trouble to open the unit, it made sense to just replace all.  Turned out perfectly, and since I cleaned all the lint out while I was in there too, the thing dries like a champ--much faster than before.  Do it--you won't regret it!