Crow Horse wrote: I've been running it a while now with the primary wide open and the MPD barely open and it's burning well.
You might try opening the MPD a little more than usual and cut back the primary air if your desire is to get a slower cooler burn.
Crow Horse wrote:As I'm putting all the advice together in a manner I can understand, as outside temps rise, draft reduces proportionally.
Yes, this is the case.
Crow Horse wrote:In order to compensate for this reduced draft, opening up the primary air to raise the burn temp to create a larger temperature difference between burn temp and outside temp. Have I got it right?
There is more than one way to skin a cat. Sure, you can open the primary to run the stove hotter and open windowstats, OR you can add more secondary air which will run the stove cooler, save coal and not heat yourself out of the house.. It's a combination
of temperature and air mass that maintains the draft. This is why the addition of secondary air to maintain draft, works..