Wow! Lots of responses here. I'm heading out into the backcountry in about an hour, so no time for full replies now.
One quick update: I sent MSR a photo of my flame pattern on my burner. They looked at it and said that something was wrong with my burner. They sent me a new burner. The new burner has a much more even flame and the flame pattern isn't shaped like a horseshoe an it doesn't have a weird dark spot like my old burner. I've got a lot more control with the replacement burner.
Video of burner in use and using a firesteel. By the way, the Windboiler is the world's easiest gas stove to light with a firesteel. I've never seen a gas stove that was this easy to light.
