OK, my modeltech Magic extra is really screwed up on this one.
I have this problem, the wing mounting screws can't come out!

No matter how long I screw it anti clockwise, it just won't come out. It stays stuck in there... It seems to hold the wing down real tight, though when it's loose it still won't come out. What's wrong?

And if I unscrew it until it becomes real loose, when i use force, it will go back in, real tight, like I'm back to square 1.

This problem is really buggging meeeeeeee.

Help?