anyone here into smokin?

How about this: open the attachment on the pipe going to the second smoker box you need a damper this will controle the temp. The further you are away from the burn box the cooler the smoke will be. A damper will keep more heat in the first smoker box. Its kind of like putting a bend in a heating duct for every bend you add 5 feet of pipe a damper gives you 2 bends in away.

Bill