Thats nice, for whatever reason my stove wont do that with any regulatory, Summit would not do it either (it didn't do much anyway).
Nice video. My stove does it some also, but the camera on my phone never even comes close to doing it justice. I find it very relaxing both in watching it and in knowing it's doing great work keeping us warm.
The stove was nice and hot and had been running all day; it was nice and toasty in the house and I added a few pieces to keep the fire going. Once the new pieces had charred well, I cut the air back to what you see in the vid.