In the process of diagnosing my GE "gas" dryer not heating and have done lots of research including videos. Multimeter tells me all thermostats are good. Meter also tells me ignitor is good and also visually looks good and flame sensor checks out good with meter. I'm working my way to the 2 coils on top of the gas valve. What's the best way to check the coils? I don't really want to start buying parts I don't need. I may put it back together and check to see if ignitor glows upon starting and go from there.