Yep -- Thats close to what I did. Adjusters, but with the servo/receiver tray acting as the brace -- and I used the DEPs system so had both elevator and rudder servos on the tray. And I will do it again on the second one I am building!

On the first one I just put in adjusters at the back of the wing. On the second I will put on front and rear adjusters as the front of the wing was a little freer that I would have liked.

David