I have fixed burners on an Eno stove and the problem is either the thermocouple or the valve that interfaces to the thermocouple. Call Force 10 in WA state (look up the web site) and order both parts. Replace the thermocouple first, as that's more likely the issue. If that doesn't fix it, replace the valve, put the old thermocouple back and keep the new thermocouple for a spare.