Lets see if I can figure it out. The idler aint the problem. It has a plastic wheel. The rollers do not usually go south with the squeal thing but could use a little brillo pad action. I would say something has fell down in the blower. I have an old school repair manual HERE
May the hinges of our friendship
never grow rusty.
About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
I love fan letters! LOL