Hi, I have a Frigidaire gler331cas2. Yesterday, I went to use it and when I went to turn the timer knob to the usual 50min cycle, it just slipped! I turned it a few times and no success, it just kept turning without catching on the timer minutes. If I push the knob in harder, it will catch at 40mins, and I ran it once and it worked ok. I did the same again for the next load but it didn't heat so I stopped it. Now, the timer knob just keeps turning without 'catching' on the minutes and/or cycles (like perma press...) so I'm thinking I need a new timer-dryer part. Is the part I need AP2107515? Is the gler331cas2 model the same as the gler331as2 model? Any suggestions or recommendations would be greatly appreciated. Thank you very much!