My movers broke the knob and the shaft of the start button on a dryer that is more than 10 years old and am looking to replace these parts but finding it difficult as the dryer is so old. It is a Montgomery Wards store brand and the model number placard is well worn and difficult to see. I believe it to be UAN 7337-80A but cannot locate the model number on any lists. Dryer works perfectly and our customer is not ready to replace, especially at the insurance coverage provided by our company. Help?