Picked this thing up for a great price after Thanksgiving. I have one issue with this smoker but it's a big one. It does not produce smoke. Zilch. Nada. The chips charred but that is all. I do have the AMZNPS which I used for the first time yesterday with some success. Need to work it out again to see if I am doing it right. Very unhappy with the smoke box on the 40. Will look at it again today to see if I can find out what the problem is.