Hi All, I'm planning on taking the wood stove plunge this summer. I just climbed up the 35' chimney yesterday to measure my tile (exterior) liner and found there is 6 1/2" x 10" of space for a liner plus insulation. I plan on putting in a free-standing stove and venting out the back and then up so I can set it in front of the existing box. I have 1400 sq ft to heat. I see most stoves have a 6" vent so I'm thinking I won't be able to get 6" stainless plus +- 2" of insulation down the chimney??? Any comments? How about reducing the flue down to 5"? Could my chimney have one smaller tile on the top and then be larger the rest of the way down? Do they make stoves with 5" vents? Any help is appreciated.