Go to this thread, http://www.rcuniverse.com/forum/m_89...tm.htm#8903153 and look at the pictures I posted recently of my SIG Four Star 120. If you read what I wrote there you will see that I had to strip and recover the wing because it was so flexible. Turns out 20% of the joints had no glue and the remaining joints had a glue that would not hold. The only thing keeping the wing together was the covering. Fortunately, I reglued and recovered before it failed. I think SIG should not be selling ARFs that it most likely knows are defectively glued.