Black tape shows where original working jib track was mounted, the
            real thing is where it ought to be. My sail makers, Bremen Sails, took
            one look at the position on blueprint and said "that must be way off."

            FORMULA:  Find the mid-point of luff. Run a line from it through the
            clew to the deck. This point is where track should be. The sail trims
            perfectly with this placement. You can see why it IS possible and
            efficient to lead the sheet forward of both shrouds while going to
            windward.