Not sure but this may have been the smoker in a very high altitude having this problem but I hear that's always been a problem with baking/cooking in higher elevations. I have the #3 and have never looked back or regretted the decision. Smoke Happens nailed it with his response. Their usage is growing very fast once the word got out about reliability and performance. Buy as big as you can....I've only seen one problem report where the Smokin-IT wasn't getting up to 250 degrees. There's a thread in the Smokin-IT group section about it, but so far as I know that user contacted Steve and they're working out a solution/exchange/whatever. Despite that problem, the Smokin-IT's seem to be a very reliable. They are built like tanks, and are definitely worthy of the Warthog decals Smoke Happens has on his #3.