MissMac
Minister of Fire
wouldn't you be able to turn your knob down lower if you had more flue?On my short stack, I actually can't run on minimum for 24 hours in mild weather or the cat drops out. I have to give it some air after 12 hours and then turn it back down again.
I suspect that wouldn't be the case with another 10' of flue, but then my minimum setting would be higher anyway!