Hey guys. I have the ECB and have done almost all of the mods to it, the only problem (which is a big one) I have is the temp dropping rapidly. I use charcoal chimney filled to top with lump charcoal and pour that into the bottom pan. In about 45 minutes the heat dips almost to 200. So i cant leave smoker for more than half hour. I didnt do mod on the smoker lid for the airflow vents. Could that be the issue? Also the lid has a 1/2 inch gap all the way around and does not make a good seal. thanks for any help.