Hey all. I'm working on some plans for an out door kitchen that will include a reverse flow smoker. Some obvious pieces like the deflector plate, doors, and structural frame I plan on making out of steel, however I'm thinking that most of the structure will be made out of brick and concrete. I'm thinking the thermal properties of the brick and concrete might work to hold heat a little better than the standard steel tank reverse flow, however it might take a little while longer to come up to temp. My first question is does anyone have anyone have experience with this type of RF build and would the standard calculation spreadsheet still apply? Second question, what kind of slope do you guys put on the deflector plate? Since this build will be a built in (not a trailer mount), any grease/drippings/water will need to flow to the low point drain, which will be at the point furthest from the fire box. However, if I make the drain end lower than the firebox side, then smoke will get trapped and may not flow effectively. Any advice?