So, first I bought a 30" MES. Right out of the gate temp was reading way off.. no big deal, call MB and they sent me a new controller and heating element. That worked absolutely fine. However, the 30" was a bit small for me once I got into smoking so when my folks retired and moved out this way, I took it over there so I could smoke when I was there...err so they could use it.... I replaced it with a 40" MES (1st Gen, controls on top back). Since I already new temps could be an issue, I tested in first. It read within 5 degrees of actual temp (measured with my calibrated Maverick. Fast forward a couple months, and now my smoker is telling me it's at 275 when the actual smoker temp is barely reaching 200.... Obviously I'll be calling MB again tomorrow, but has anyone experienced this before and if so what was the solution?