With birdcage and stringer in place its time to tackle the windshield support structure.
I fabbed some z strips from .035 AL for the forward cabin post/upper door junction. The upper door will close against the inner flange, the windshield will be sandwiched to the outer flange. The z strip will be attached to the post with pull rivets.
I formed some 3/8” tube to take the shape of the leading edge, then welded them to the birdcage on top and the cabin post below. These will support the top part of the windshield curve. The windshield was test fitted and it looks like it will fit with a bit more adjustment.