Fantastic heater set-up. Looks like it screams out the BTU's. Have you considered a perforated windscreen (quick mount tabs are already in place)? I only ask due to lot's of experience in windy environments, and how the heat transfer is severely diminished from flame to aluminum surface with a steady wind. A shield has us boiling water from snow at 17k within 7mins with an MSR 600 International...without, it takes forever and wastes fuel. Cheers