Hello fellow smokers, smoked for first time this weekend. Ribs were great. I also used a digital thermometer to monitor cabinet temps. I notice that the highest temperature I could achieve was 240°f over a 5-6 hour period set at max on rheostat. I do need to mention that the outside of cabinet was a sustained 40°f. Reading the forum info and Lazy Q lead me to believe I may need to adjust rheostat? I found that on forum as well but it didn't seam to be the same switch as on forum. I also did not see any cold spots on element at break-in. Can u please advise?