Drilled, Dimpled & Countersunk Rt Inboard Wing Holes for the nutplate attachment of the Wing Fairings.
The upper skin countersinking of the screw holes was done after the nutplates were installed. The instructions said that the #40 countersink should be used to make the #8 screw countersinks because it would center in the nutplates. Ifound that the #30 countersink centered much better than the #40 countersink.