Has anyone hooked up an outside air kit to the insert? What were your observations? When my stove runs ,I have a good draft in the room along the floor. I ran a flex pipe off the back of the stove and out a window with no results. Do you need to block off any holes or cracks on the front of the stove to get it to draw from the back. I can't see it drawing from the pipe with the gaps and holes along the front around the ash pan. Air is going to be pulled from the path of least resistance. What am I missing? What do you guys think?