I have a new Dometic cooktop. Tested it several times at sea level and it lit immediately. Took the trailer up to 7,000 feet. Turned on the knob to 'ignite' and nothing, no sound of gas flowing. Frige, furnace
and water heater all worked. But not the cooktop. Next morning, tried the cooktop, and it worked! HURRAH! So what was the problem?