Stihl and I have had this chat before about the Jotul C 450 - I have to say, I can heat myself out of the room on my Jotul, and I truly wish I could help. Stihl, is yours exposed to the room as much as possible (i.e.sticking out)?
I am wondering if the lack of radiant heat is what you are all describing. The Elmira had a lot of steel exposed to the room, and would certainly have given off more radiant heat. If I get my Kennebec (C450 with a different surround than the Tamarac) up to speed (I get 750 C in 15 mins on my stove top thermometer), and turn on the blower, I'm cookin'.
As far as moving the baffle forward, I wouldn't. The airflow is very intentional - once the flue and stove is hot (I think this is were most of us go wrong at first, we try way to early to close down the primary air) and you close the primary air off, the stove draws air in from on top the fire to burn off the gases. as well, on the Jotul and others, air is brought in at the top of the doors, creating a wash over the doors, down to the fire bed. Then the hotest air is exhausted out the front, heating ther top of the stove closest to the door the most, as this is closest to the room.
These stoves are way more sensitive to poor draft/wet wood/ too large splits/too much primary air cut off too early than the older units. I spent the first 2 weeks learning to run it really hot, and then started to learn how to cut down the air to get better "wood mileage". Try to run these units at full throttle longer (I don't cut my air below P for about 30 mins after it hits 750 C), and see if you are happier. You are still going top have to reload more often, and I have not yet gotten enough overnight burn duration to allow me to stoke the stove from coals in the AM. But I am warm.
Summary - dry wood, smaller splits (wrist size nor fist size), full throttle for longer, cut primary air back slowly. Hope that helps. The air in Ontario isn't that much different than NS to make these things work so differently