I'm having a harder time than expected taking the back panel off b/c it is one big piece that wraps around the sides of the dryer. I'd like to take it apart so I can see the belt and other parts in the back b/c this morning the dryer started making a somewhat high pitched whining sound while a load was going. It still tumbles and heats up I think, but I'm concerned about the noise. I already cleaned out the lint trap and vent. I'm just wondering how to get to the right screws that will release the panel.