I received a Masterbuilt electric smoker for my birthday I didn't open it right away, but when I did I tried to preseason it . The control unit did not work correctly so I called Masterbuilt, they sent me a copy of all the missing paperwork that should have been in the box. But will not work with me about the faulty control unit because I don't have the receipt, my wife can't find it. So now I have a smoker that works for about 30 minutes then quits. I followed the trouble shooting guide in the owners manual, it says to call Masterbuilt to request a new unit, ALOT OF GOOD THAT DID ME!!!! I will not recommend their equipment to anyone!!!