Last night, I finished adjusting the trim on my Bede BD-4C airplane. Pitch (nose up / nose down) on the BD-4 is controlled by a horizontal stabilator. The trim operates an anti-servo tab on the back edge of the stabilator. (See my post Anti-Servo WHAT? Horizontal Stabil-WHERE? for a description of that techno-babble.) The trim mechanism is pretty simple but counterintuitive and a little hard to get properly adjusted.
I made a short video which shows how the horizontal stabilator and the anti-servo tab and the lever (in the cockpit) should work.
After I shot the video, I installed the final hardware: fender washers next to the rod ends, castle nuts, and cotter pins.