We got a used Mama Bear. I have gone thru most of the forum but I need direct answers. The manual I found isn't helpful. On the inside, is there something that goes above the bricks? There are what looks like shelf brackets above the bricks. There isn't a 'rope' around the door. Should there be one? I feel like it should have a damper in the stove pipe. We have a 90 year old chimney, in great shape, but I've never had a stove where you didn't have one.