I disassembled the bottom of the oven to watch the ignitor. I could set the oven to 350º, the igniter would start to glow, but then nothing would happen after that. After watching a few YouTube videos, it seems that the ignitor is a common problem and even though it does glow, it won't get hot enough to trigger the circuitry to allow the gas to start flowing. After replacing this part, everything works fine. There were only 2 screws holding the part in place but one of them gave me a really hard time removing it.