If you can see this butchered document, the adjuster fits into the fuselage and rides up and down on a screw. A socket is in the wing into which the pin is plugged. These work for F3A right up to giant scale. There is not too much stress on these pins and they work great.

I like to tape the root rib to the fuselage as colse to zero incidence as possible, drill the adjuster pin holes through both the root rib and fuselage at the same time. Mount the adjusters, and glue the sockets into the wing when everything is assembled.

By the way, we use the Gator units. We also use the Gator stab adjusters, giving us very adjustable airplanes.

I hope this has helped.

Mark