A 60 gallon air compressor went out at my place of business last week, so, I figured it would be the perfect opportunity to build my first smoker. My question is how to create the seal around the door opening. In a lot of pictures of smokers I've seen, it looks like 1/8" thick flat bar that runs along the outer edge of the smoker door. When I tac weld my flat bar there at the top of the door, I can never get the door to fully open. Is there a trick to getting full opening ability on the door? Any help is greatly appreciated.