I replaced the ignition device. Your recommendation was spot on.
1. Removed the metal pan at the bottom of the oven and tested the old ignitor - it did glow but not hot enough to ignite the gas. Ignitor was faulty.
2. Pulled oven away from wall, turned off the gas line and unplugged the oven.
3. Removed the back panel to access the two wire leads, removed the 2 screws on the ignitor, replaced it, and connected the leads.
4. Plugged oven back in and turned on gas - ran a test - it worked!
5. Vacuumed behind the oven and pushed it back.