I'm experiencing a problem with my attempt to build a TIE Interceptor out of the First Order Special Forces TIE Fighter. I've got the basic wing structure, which I largely copied from a post I found on imgur but fixed up so that it wasn't using questionable/illegal builds. The problem is that the wings don't stay in position at the proper angles - they flop closed. The pieces I have left are minimal, as I'm trying to only use pieces from the set itself.
Anyone have any advice/solutions?
Here are bigger versions of the associated pictures:
http://imgur.com/a/VCqMW 