I have a masterbuilt non-digital smoker and I love it. The only thing I would like to improve on and may have a solution too is the smoke output and use of the chip. I find that after an hour or 2 the smoke output is just about gone, but when I go to ad chips...the old one in the box are just black and not ash. When I dump them out...they start to smoke and glow again. I think the smoker box cover is not letting enough air in to be efficient. The question I have is....should I leave the cover off and let it go like that? If I did should I soak the chips or not so they don't flame up. Or.....should I not fill the box as full and change more often?