RE: Four Star 40 Question
Look in your bag of small bulsa peices for a rectangle piece that seems to fit nice over the hole in the wing.
Cut away "ONLY" the covering away from the hole in the wing.
Now CA/Glew the rectangle piece onto the wing.
Now you have a mount for the servo, just screw it into place.
There is a picture of it in the book. If you need another just let me know and I will try to post one.
Tom
Pearl Harbor HI