I have been doing my research for awhile now and think I have almost all the info I need EXCEPT ,,,with my WSM I had always read that you leave the top vent wide open and regulate flow with the bottom dampers. In my reading here about smokehouses though it seems most regulate the flow on the exhaust instead of the intakes when using a flue pipe . If a fluepipe is not used then it seems most opt for an HVAC register. If you use this method , doesnt the outside of the smoke house get stained with smoke? Thanks for any input.