The left side Skybolt flanges are now drilled and clecoed to the fuselage. (Measure 10 times, drill once.) Additional measurements show the nominal distance between the flange holes is about 3.5", optimum for the RV-14 and just where I wanted it to be. The lower flange on both sides are not going to be drilled until the lower cowling is fit. Both left and right lower flanges are within .15" of each other. in terms of location on the side skin. They will be marked and removed so they can be installed later next week. Next on the agenda is to rivet the flanges in place and drill the upper cowl for the fasteners.