I have a Maytag Gas Dryer MGD3600BWW that only makes a squeaking sound only when the heat is on. I can run the dryer all day on air fluff and it is quiet as a mouse. As soon as I turn the temperature from air fluff to any heat (regular, medium, or low) the dryer starts making a squeaking noise every 2 seconds (squeak....squeak....squeak...) a few seconds after the gas burner kicks on. I took apart the dryer and cleaned it out. I lubed the roller and pulley shafts. The belt looked good. The slides looked good. It still squeaks only on heat. Any thoughts? Thanks.