Placed a piece of angle iron across the top of the butt ribs to simulate the skylights aft edge. Then placed the aft mounting angle temporarily in place. Marked and trimmed the turtledeck skin forward edges for trimming to clear the rear spar carry thru. Checking fit repeatedly. Trimming little by little. As the turtledeck will need to clear the rear spar carry thru by 1/8". With the turtledeck up against it's forward stop, I marked the locations of the flaperon torque tube onto the lower edge of the skin.
