I use charcoal in a an offset horizontal. Using some non-finished flooring scraps (oak and hickory) for smoke. When I add them to the fire I get great volumes of white smoke as they begin burning (flaming). Any ideas how to reduce the flaming and dense smoke? Should I put them off to the side of the hot coals rather than on top, soak them first, any other ideas? I thin I'm getting some creosote because of this and that's not good. TIA for any ideas.