Grew up with Gas appliances.. Here is how it works on the Attwood Oven.
The attwood oven works like a old gas water heater. Turn to LIGHT, and press, Light the pilot and HOLD for 1 minute (usually you can get by with less) then turn to temp, Main burner should light.
The pilot warms a thermocouple which powers an electro magnet in the valve, if you release before the magnet comes up to full strength the valve is closed, if the thermocouple is up to full power, the magnet holds.
Possible causes of low power:
Pilot dirty, due to spiders or whatever, keeping the gas from flowing
Pilot adjustment not set correctly
Bad thermocouple or dirty thermoucple preventing proper operation
Bad connection (Electrical even if it does not look like one) to the valve.
Alas, hard to figure it out.
Mine needs only a few seconds to set the magnet, then the burner lights.
Home is where I park it!