Howdy guys and gals, I recently got a new offset smoker and in my burn in tests I am having a hell of a time controlling oxygen to the fire. With everything closed up, the temp inside the pit near the firebox was reaching over 500 degrees, after 1 hour! (perfect example of why you should do test burns to learn your pits!) I know there's a lot I can do to make improvements in general to the offset smoker: - seal lids on firebox and pit - seal any seams that aren't welded - seal firebox connection to the pit - baffle inside the pit to direct heat down and to the other side of the pit - lower the chimney to the grate - wrap in welding blankets - seal 'other' leaks in my firebox It's the 'other' leaks that I'm needing help with. Here are some pics to explain: This is my firebox door - there is about a 1/4"+ gap between the door and the firebox itself: Here is the catch for the door latch - this hole is huge! No wonder the fire was raging even with everything closed up: How would you guys suggest I fix the door gap? For the latch hole I was thinking I could just use silicone and a small metal square to seal it from the inside, but the gap around the door is confounding me. I don't have a welder or know how to weld, but I'd love the chance to learn. If I can fix this in a simpler or quicker way I'd rather go that route so I can get smoking on this bad boy faster - it's much bigger than the weber kettle I'm coming from! Thanks for your help, Gartlesby edited to add a couple more questions: 1. The silicone recommended by Amazing Ribs is only rated to 500 degrees - is that good enough? http://www.amazon.com/exec/obidos/ASIN/B000DZBLNC/amazingribs--20 2. Hardware store guy said JB Weld wasn't good enough since things would be getting too hot - but this was also recommended as a sealant/glue by Amazing Ribs. Should I not use it?