I can't get mine hot enough today. Used it for New Years and it heated up 225-250 with no problems Right now it is 14 degrees out. The high today is suppose to be 30 degrees and I can't get it to go higher than 150-160 degrees. I disconnected the hose to try to reset any safety's, and turned the burner on slowly and lit it. It lites up fine, stays lit just fine but, when I turn the burner dial it won't go higher or lower. It seems to be stuck in a medium flame setting. I've gone so far as blocking off the side vents to try and keep as much heat in there as possible. I'm running out of ideas, does anyone have anymore suggestions? Did I also mention that I have a 14 lbs brisket in it since 4am. Also can I cook/smoke a brisket at 150-160 degrees?? Please help!!