http://www.rcuniverse.com/forum/m_8971078/tm.htm see this for wing failure.
http://www.rcuniverse.com/forum/m_89...tm.htm#8903153 see this for my recently purchased Four Star 120 ARF that fortunately I stripped and reglued the wing before it fell apart. This thread also has pictures of the the wing joints with no glue. I found that I had to use epoxy in as many areas as I could reach in the fuselage to reglue the joints. I even had to remove the covering in two places to get to turtle deck stringers that were not even attached/glued. I think that for whatever reason, some of SIG's ARFs are being made by an extremely poor manufacturer and SIG will not stop sellling these substandard ARFs. In the long run this is only going to be bad for SIG's business. I know I will never buy another SIG ARF. Some of their kits are top notch, but not the ARFs.