Richard M Alamogordo , NM April 23, 2017 Appliance: Model GTDP200GF1WS The timer knob would not turn the timer the knob was cracked were the knob slid on the shaft Removed the old knob and replaced it with the new Knob. The new Knob was modified with a metal band around the plastic part of the Knob where the Knob mounts to the shaft. That was a good move on the part of the manufacture of the new Knob. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes