Marty,
The short wood screws are to mount the elevator horns (2) and the aileron horns. (2) The location of the horns are on each control surface where you can see a ply mounting plate under the covering. The rudder horns are mounted on both sides of the rudder and four (4) machine screws pass through and are retained by washers and nuts. The nuts should be Lock-tighted. Let me know what you find. All the screws and nuts should be located in a small plastic bag that contains the control horns.
Terry