I'm in the home stretch of my smoker build (link below) i cleaned it up today and attempted to season it. I was not able to get the temp's above 220. http://www.smokingmeatforums.com/forum/thread/103584/mini-patio-rf-build I started with a full chimney of lump (cheap Blue Bag Royal Oak...didn't want to waste my good stuff) left the air inlet wide open and the chimney baffle wide open. It climbed to 150 in a half hour or so, i left it and came back and an hour later and it was only at 200, i added some more lump and the temperature still would not climb. I am thinking that i am getting too much air coming in around the cook chamber door, there is a bit of a gap from some welding warp. I had another open hole on the side i left for temperature probes, i plugged that up and the temp got up to 220. Whats the best to use to seal up the door better, are there any products like high temp silicone that would be safe to use? http://www.imperialgroup.ca/fireplace_maintenanceproducts.cfm?c=385 I can pick this up local or would i better be using fire rope? If it is not the door where should i look next?