I have a Frigidaire dryer. We've replaced the rear drum bearing, the drum glide and the front drum glide (felt). It still squeals horribly when it warms up. Sounds like the squeal is coming from the front of the dryer. What now?

You also have a guide on the front. How well did you clean and lubricate it? Use white lithium grease on dryers. Look at these: https://dl.dropboxusercontent.com/u/8010163/Frigidaire%20Dryers%20and%20Test%20Equipment.zip