I have an indoor center-house chimney (8 in. flue) of about 30 ft., my new Morso 2110 is located in the basement - vented through the top. I've taken apart my stovepipe which was approx. 3 ft. up and then a 90 degree with about a foot of pipe leading into the chimney. I start a new fire each evening when the stove is stone cold and the difficulty getting started without smoke is a pain - I've tried all the usual remedies except a liner and changing my pipe to a different configuration. I am changing the pipe to go up 2 ft. then straight back to the thimble at a 45 degree angle, which requires moving the stove out a few inches - hopefully this will help my start-up draft. The thing is, once I do get the fire started it takes off like a freight train - I'm burning all hardwood seasoned at least 2 years, so I thought of putting a damper in my pipe just for peace of mind. I'd probably rarely use it, and I know they're not usually recommended for newer EPA stoves. Yes? No? This is my first newer stove. Any thoughts appreciated.