OK, this is where I am with the GMG DB .... (hey Low n Slow, this may help you too !)
I never mentioned that I had the lid/door replaced due to a 1/2" gap, the new lid had only a 1/4" gap to begin with, now it's at about 1/2" again.
I've added the pellet tube smoker and a downdraft hood, which I figured I'd add anyway, and has added smoke, good mods .... still not enough though, too much smoke escapes through the gap, so now I see the final solution is closing that gap.
I'm considering buying fiberglass 1/8"x1" wide gasket with the addition of 1/4" or 3/8" rope to fill the gap.
http://www.stovegaskets.com/#!gaskets-by-the-footThe other thought is to add a latch .... as always, I appreciate all input and suggestions !!!