Our 16-year-old Montgomery Ward dryer, Signature 2000 model # FFT-7589-80B, has developed a very high-pitched squeak that starts a minute or so after we start it up. I have replaced the felt pad with spacers (between the door and the drum) to no avail.

The front panel is a solid panel, and the mechanisms (motor, rollers, etc) all seem to be in the back. In the front is the door and the lint duct, but no rollers or anything visible below the drum.

We have lost the manual years ago for this, but I'd really like to try to fix it on the cheap rather than spend hundreds for a new one.

Any suggestions as to what may be squeaking, how to access it, check it, and replace it?