After using an electric bullet smoker for a few years, the wife upgraded me to a Pit Boss 456D smoker as a Christmas gift last year. I put it together this spring and have only used it about 4 times. All 4 times, I could not get the smoker to stay lit past 1 hour. When it did reignite, I couldn't get the temp to remain consistent. Very frustrated to say the least. Is there something I'm doing wrong, or likely a defect? If a defect, how do I go about returning it and getting a replacement?