I first changed the thermal fuse, which was very easy. It seemed to be working, but then the heat stopped. I checked the fuse for continuity and it was still good. I then called appliance parts pro and the technician help me troubleshoot. I first checked the thermostats for continuity and they were good, then I saw the orange glow from the igniter, so I know it was good too. The most likely culprit was the gas valve coils. while I was taking apart the dryer I also changed the felt drum seal and the bearing ring. The parts arrived in 2 days, The videos were perfect, the technician was charming and the dryer is like new!