We have a SMEV stove in our camper. On our recent trip to Colorado we had trouble lighting the stove at campsites around 10,000 feet. At first we thought, since we don't spend a lot of time leveling, that it was caused by the tilt of the stove. We determined it was probably the high elevation when camped on the Grand Mesa around 10,600. The stove would light only with a flame, the igniter was useless. The next night at 8000 feet in Great Basin NP the stove started with one push of the igniter. Anyone else experienced this with stoves or refrigerators? Yes, the O2 molecules are a little further apart up here.