I'm surprised by such seemingly short burn times with such large fireboxes, especially considering the 36 and 44 Elites are catalytic units. I thought the whole advantage of a cat is that you can choke the firebox down (restrict airflow) and let the logs simmer at a slow burn rate while the cat incinerates the smoke and simultaneously generates more heat?? Isn't that basically how the Blaze King King achieves its legendary burn times? I know this is an insert instead of standalone stove, but I don't understand why roughly comparable burn times (~10 hours) aren't possible.