Finished the countersinks in the rear window to fit the diimples in the back edge and the screw heads in the roll bar side. I sued a #27 countersink and electric drill at slow speed so as not to dig in too quickly or deeply. Broke the rear edge os the fuselage skin then final drilled and dimpled the holes with the hand squeezer. All ready to install the window except for a paint edge to hide the ProSeal
