Its a little hard to see but here are a few pics of the damper.Looks great. I don't recal seeing the inside pictures of the warming box for the vent tubes you mentioned.
We cooked the butts for a fire department fundraiser. It was definitely nice being able to fit them all on one smoker.72 Boston Butts!!! Man you sure must be hungry. What in the world are you doing with that many butts at one time? I would figure that to be between 5 and 6 hundred pounds of Q.
What paint did you use on the smoker and trailer? It looks awesome!!!!