So I have the Oklahoma Joe, Here in Auckand new zealand these are $1000-1400 - you lucky walmart shoppers. Anyways i have done the tuning plate mod, used gasket goo and sealed the firebox and used lavalock tape around the door and firebox and also fitted the lavalock Latches . All standard mods. In my last Super cheap but cheerful smoker. I extended my chimney down towards the floor of the smoking chamber. I never had a tuning plate in El cheapo and just was learning as I went, But now with the tuning plate installed in the Ok Joe i am wondering if adding an extension to my chimney outlet extending it out along the inner ceiling of the smoker chamber to the end above the start of the tuning plate will create more of a reverse flow. I've done a pretty bad picture if it helps the red is the flame and heat and the blue is the extension of the chimney I propose. Would I gain anything from this? I am thinking if i bring the chimney down all I will be doing is putting it near the end of the tuning plate and expelling heat fast before it gets around the chamber .Any help would be apprciated. i can test run the idea without anything cooking but i dont wanna ruin any protein with an idea that could be far fetched or pointless