As previously noted the left side door had been made too tall and would not have opened under the wing. To get this correct for the right door I made a template of the bottom half of the main wing rib. This was attached to the root rib template referenced via the cord line. A straight edged piece of scrap timber was then clamped to the fuelage stretching horizontally across the door opening to define the position of the top of the door opening. This was set 3/8" lower than the bottom of the main rib template to allow for the door panel to overlap and create a good seal. Then the right door was fabricated in the same way as the left. See http://tailwindbuild.blogspot.com/2008/08/14th-august-2008-left-door.html , http://tailwindbuild.blogspot.com/2008/08/17th-august-2008-seat-bottoms.html , and http://tailwindbuild.blogspot.com/2008/08/18th-august-2008-left-door-latch.html for details. Finally the left hand door was shortened to the same dimensions as the right so it should now open!