Squeeling on startup and intermittently during use

First, I read reviews on this forum. Great help! I was betting, from previous reviews, that it was a drum roller. I took everything apart prior to ordering any parts. Sure enough, one drum roller was seized on the roller shaft. Decided to replace all rotating parts (rollers,shafts, belt, idler pulley) while everything was apart. I also took the opportunity to clean out all of the lint (there was a lot) from the motor and intake.
Parts were on my doorstep in two days. The dryer is like brand new. I could do this job again in less than an hour. This was money and time well spent.