Somethings I left out of my post above:

The A frame on top of the wing is hinged at the top surface of the wing and the wing had to be thinned to blend into the flexable area. I installed a long piece of 1/4 x 1/2 spruce drilled for the carbon rods to mount in. You can see the spruce and the hinged A frame in the first picture I posted. In that picture the rods are stainless steel wire but was too stiff so they werechanged to carbon rods. After this picture was taken I added strips of balsa on top and bottom of the spruce between the rib cap strips to blend everything together.

The wing actually does not warp! The trailing edge near the tips flex up and down so this method can be added to the Balsa USA kit of either size. See picture.