started the day off on a horrible note. i discovered while measuring for some internal braces that one side was welded in about 3/8ths of an inch lower than the other:
good:
bad:
not sure how it happened, but i fixed it (spent most of the day doing that). it did help, but not solve, my off center issue. after that i added in some diagonals:
here is the internal bracing tacked in and ready to be welded:
once all that was completed, i set about mocking up my wings:
heres what it looks like now: