Now for the wings.

I made a 1/8" ply rib former for the join points at the removable wing tips. Then I drilled a 1/4" hole in the leading and trailing edge of the rib for a short dowel. I white glued the ribs to the cores with the dowels in place but not glued. I also used the foam wing saddle to hold alignment until the white glue set.

I would suspect my wing also has a very "small" amount of twist on the right wing tip but not enough to affect flying. The only reason I think this is true is during power off stalls the plane will always drop the left wing tip first. I can not see or measure any twist in my wing.

The wing setup was a real thought process but when I spent about a month looking at the cores,, I finally figured out how to build a straight wing.

Good luck.. Jim