All the many parts of this complicated thumb rest can be adjusted by means of two allan wrenches.
I.5 mm for the little screw on the mounting slide and the 2 mm wrench for all the other parts.
Please make sure the screws are unlocked before pushing one of the rods in another position.
Most important is again that the tip of the thumb is slightly bent and that the thumb makes good contact with the casing in the hollow cavity.
The sequence of adjustment is first the height (bottom thumb rest or at the mounting slide),
Then the adjustment to the left, and then the ball joint on top, then hinge, and at last the padded thumb rest wiht the second ball joint.