RE: How do you keep a tent warm at 11,000 ft ?
What size is your stove pipe? We noticed a big jump going from 4" to 5" inch stove jacks.
Our stoves were made by our two "camp engineers".
How tall is your wood rack? You could add some vents across the bottom, below your door?
Also, how tall is your stove jack? IF it doesn't clear the roof line of your tent, you will have trouble with the draw on still nights.