I now have to adjust the fuselage formers slightly, until they fit the top and side-views 100%. I do this by drawing in the longerons. Once drawn in, it immediately becomes obvious which formers needs correcting. These discrepancies on the 3-views are typically due to distortion during scanning or copying, as well as the problems with very thick pencil lines – It is not always possible to find the center of a line 100%. The picture here only shows the longerons on the side-view, but the top-view will also be used to correct the formers.