Help! It seems like I'm constantly adding woodchips to keep the "thin blue smoke" going in my CG Duo. Obviously, I'm doing something wrong. How to do it right: Tinfoil package with holes it it? Placed where? Directly on the coals or next to them? In the small metal pan that rests on the side of the SFB? (I've tried that - seems like it does nothing and then the chips catch fire and smoke for a few minutes then are gone Something else? I like having the option of using different wood chips (I have a source for fruit tree wood) Help? I've got about an hour left of 3-2-1 on some ribs and I'd like to keep them nicely smoked in the meantime.