Yes it was, just figured up fuel burn to approx header tank capacity as about 6 min to empty. When I landed I drained almost 4 gallons before I trailered home. My left tank drains faster than the right and I had a 12 knot crosswind plus gusts that was keeping me busy. Can't complain though I look at it as a very good lesson and one I won't be forgetting any time. Landed with what should have been plenty of fuel if I was not flying wing low. I probably was, over the course of 30 min flying more right wing low than high and the header just didn't have time to fill up what I was using. As soon as I got the wing up and kept it there I got some fuel in the header. The fuel pump got the engine back up and never even burped the rest of the trip back (7 miles). It might possibly be something else but seems AWFULLY coincidental. new fuel filters all the way around 3 weeks ago (7hrs), sumped prior to flight and carbs as clean as new after the flight.