I have a question related to outside air. My Quadrafire 5100 insert has the option to use outside air for combustion. When the insert is installed, the ash cleanout in the back of the masonry fireplace is uncovered. This area leads down into the basement (which is poorly sealed) to a very large cleanout area. Since there are no ashes in there or every will be, can I just open up the outside air on the side of the unit and cover the ash clean out area in the basement with some mesh? Is this a wise thing to do? This may help assist with cold drafts in my downstairs rooms since it is pulling air from my windows and doors to do the burning. I figure I can just pull air from the basement instead. Just a thought. Also, that being said, do I really even need to run a line...afterall, the opening on the floor is big and the insert surround covers everything back there. Thanks for any tips.