Yes; they are fastened to that crosspiece, you see; and when I pull them, it moves the rudder.
The crosspiece should now revolve with the screw as an axis.
For a neck, button a cuff around the pole between the crosspiece and head.
To get this angle, tapering blocks are fastened to the crosspiece ends, as shown.
The crosspiece at the rear is cut on the angle of the springboard.