They sell spray cans of belt dressing. This will help figure out which one is squealing, then replace the guilty belt (or maybe shim the pulley ?)Im going to try to post a video of a small squeal I’ve been hearing every now and then but can’t seem to find where it’s coming from other than the belt drive area, well I think I figured how to take a video and post it but I’ll have to try that another day so I’ll add to this later