Unfortunately a lot of chimney sweeps know very very little about any 1 stove. Many just have a general knowledge and give poor advice when dealing with modern stoves. We get calls pretty often where the sweep told them something way different than we told them when we installed it.I’d have to get back on top of the roof to verify again, but believe the ID was 6 3/4” x 6 3/4” exact and the clay is pretty damn thick making the OD just over 8” If I remember correctly.
So from the reply’s I’m receiving its being suggested to keep going at it with this stove and test it some more with different wood, dryer wood? I got so fed up with it, being told by someone whom installs stoves and cleans chimneys for a living that the stove was malfunctioning that I already disconnected the pipe and took it off the slab and have it in the garage ready to roll