@ Jester, The fuselage and top/bottom join lines have been checked and rechecked many times by me and by famous professional nit-picker experts over at the Aerodrome.  The drawing I used comes from Dan-San Abbott who drew his using a series of photos of a captured plane.  The plane was marked with chalk reference lines for French draftsmen who made a set of drawings.  I've got a reproduction of the French drawings too.  The messed up part is the French guys filled/sanded/smoothed/repainted the fuselage including the lower step and tail hand hold.  Those are the parts that Dan-San, I, or anyone else, apparently, haven't gotten fixed.
One thing is for sure, the Dan-San drawing is as close to accurate as you can get, especially when looking at the Windsock drawings; those things are WAY off 

  I've been comparing the 4 drawings I have along with two almost perfect profile photos all along to make sure I had everything as close as possible.  The main measurements are spot on.  Incidentally, my profile is 1 px = 1 mm 

Adding markings really helped find problems I wouldn't have ever noticed otherwise.