Push an eyeball assembly onto an eye-pivot, don't force it on, remember the LED wires, just wiggle it about and the pivot-wire should just slide past the wires. Put one end of the Eye-link through the hole nearest the eye and fasten it on with a length of sleeving.
Now do the same for the other side.
Fasten one end of the Eye-push-rod into a large servo-disc.
Plug the lead for the Eye-servo onto the connector for channel-2, centre the servo as before and place the disc in position. Put the free end of the push-rod into the hole in the right-hand eye-plate and fasten with a length of sleeving.
Push the eyes all the way up the pivot wires and fasten in place with sleeving.
Move the Position-control and check that the eyes move from side to side properly and are centred when the control is centred.
Fasten on the disk with its screw.