I keep getting a TC Firepot error on my Mt. Vernon AE insert. I replaced the thermocouple a couple of years ago. While replacing it i snapped the lead on the circuit board. I was able to solder a new one on with the help of my dad. Saved a few hundred bucks there. Is about 2 years average for a thermocouple? We typically burn about 5 tons of pellets per season. I just hate to try to replace it again. I'm afraid I'll snap another lead off.