First I thought it was the igniter assembly that was preventing the flame from igniting. Thinking the igniter wasn't getting hot enough. That wasn't the problem. Ended up being the gas valve coils, that were preventing the gas getting to the igniter. AppliancePartsPros.com was incredibly fast in getting me the parts I needed, and the videos helped out a ton. With all the parts in hand, took me maybe 5 minutes to replace all parts and have a working dryer again.