Im in Lawrence Kansas and it is cold right now, and I got a new smoker for Xmas. Ive tried it out a couple times and cant get the heat up! Im using lump charcoal in a Brinkmann charcoal smoker(it looks like a safe and opens from the side)!! I drilled some holes in the charcoal pan to get some air, but not helping! I have 4 vents, 2 at the top 2 at the bottom, ive been keeping the top 2 closed and the bottom 2 open, and even put a little fan on the side to keep the coles hott but no luck! Is it just the cold(15 to 40 degrees F) Or am i doing somthin wrong??? Want to do a Chuck Roast this weekend!