At first I thought that the timer was bad, because there was no resistance when I turned the timer knob. I was not looking forward to tackling that project or paying to get it repaired. I pulled off the knob and upon inspection noted that the socket in the back was cracked, preventing it from properly engaging the timer shaft. A pair of Vice Grips served as a temporary workaround solution. It was very easy to find the proper replacement knob from your site. I ordered two in order to have a spare knob if this happens again. Delivery was prompt and the repair was implemented without incident.