Hello all. I have an Amana electric dryer model NED4655EW1. The timer won't advance in the auto mode, but works on a timed cycle. I have heat for both auto and timed. The only thing that I did was to replace the duct work to the vent, after that, this problem started. I removed the back of the dryer and ran on auto, the thermostats seem to be functioning properly....while running I impeded the airflow from the duct to increase the heat...I could here the "click" and see the element go off, but the timer still wouldn't advance. Any advice would be appreciated.

Thanks