Wow, Thanks everyone for your kind comments.
Things I learned: No matter how hard you try, no matter how many times you check, no matter how careful you are throughout the entire process, you can still glue the upper wing on slightly cocked.
I also learned, after exhausting all the careful ways of gently trying to coax the wing into the correct position, you can get really miffed and just grab and twist it, hearing all the struts cracking, and then re-glue back correctly....
I had kinda forgotten about the Gotha!! Come to think of it they had the DH-10 and Breguet, hmmmm....and the Sopwith triplane.....
Thanks again all, a most appreciating group.