I recently acquired an older Winter Warm Small insert stove. I replaced the glass and did some painting and welding to get it back in shape. When I put it into my firebox i noticed that I am nowhere near the flue. I've found Some offset boxes that go up to 8" inches but I need about 16" center to center to reach the liner. The firebox is only 24 inches high but very deep. I started building my own offset box that will fit my application but I am starting to question should I just ditch this stove and look for something rear vented instead of top vented? I mean I can build it but am I pushing my luck with this distance? Any advice would be appreciated.