Do-It-Yourself Story

Replaced rollers, glides, and idler lever. Cleaned interior and blew off the motor. Verified the motor was spinning freely. Idler lever wheel was almost seized and likely the source of squeal. The glides were also worn and the felt was gone. Rollers were so-so, but it was cheap enough to put them on while they were exposed. Spring clip pliers are a must if replacing the rollers.