Ray,

I noticed the same thing. That is why I installed the CF tubes in the wing halves after I removed the steel jig rods. I thought I would try it just to see if it made a difference. After they were glued in place, the wings did seem to be stiffer although I could still twist the assembly a bit. But then I didn't have the wings covered at the time. I suspect, however, that once the wings are covered that they will become very rigid. I'll let you know.

Bill