I believe it is just the lowest two scoring rounds are dropped.
Back to more sanding, got both upper wings pretty much done. Obviously there will be more sanding after the ailerons are cut out and faced. Still had to put them on the scale though. I took a few minutes to weigh the wings, stabs, motor and controller, landing gear, batteries and servos. So far all those components weigh 6.5 lbs. I am shooting for 2 lbs for an empty fuselage and that would bring it up to 8.5 lbs. I think 2 lbs for paint, linkages, RX and RX battery and some hardware is a fairly accurate estimate. I would be very happy if I could get a finished weight of 10.5 lbs.