First: I did 2 14 pound turkeys in the new 045 yesterday, and they both turned out great. I did have a scare about 45 minutes into starting the smoker. There was a huge explosion type noise from the area of the smoker (I was in the house). I checked the turkey, and it was fine. I ran a streight edge around the inside of the smoker today, and it is streight and square. I have no idea what the explosion noise was. Now the big question? What is the difference between the SM 025 and the SM 045 other than one is 4" or so taller than the other? I thought it was a programable meat probe, but now I don't know.