Loosen the setscrew holding the retract pushrod. Remove the four retract screws hold down the retract. Then remove it from the wing.

 

Pull on the retract mechanism, making sure the side locking bar is at its furthest lock down position as shown.

With a 2.5 mm hex wrench or Allen wrench, slowly turn the hex wrench to the right. This will tighten the front set screw until there is no more back and forth movement in the retract block. This will provide stability in the lock-down position.

Now push in the retract rod and check to see if any binding occurs. if there is binding loosen the front setscrew slightly until binding stops.
 

Adjustment to the lock-up position is also require to ensure proper functionality of the retract. Rotate the retract over and move the locking bar about half way in the up position. This will expose the back setscrew for the lock-up position adjustment. Tighten the setscrew with a 2.5 mm hex, then remove the hex wrench and fully move the locking bar into full up position. Now check if the gear has free play. if it still does continue to tighten the setscrew until no play is achieved. You will have to tighten the set screw several time to achieve no play.

Check for non binding movement of the locking bar from full up to full down position. if binding occurs, loosen the back setscrew slightly.