2.5. Installing/Swapping the Thumb Rest/Lever
There are both left and right handed thumb rests, which also include the thumb button lever.
Only one side can be installed at any time. Without a thumb rest/lever installed, button #5, the
thumb lever button, cannot be pressed. To attach a thumb rest, insert the M3 x 40 mm socket
screw through the handle from the opposite side as the thumb rest is being installed. Use the
2.5 mm hex wrench to tighten it in place. The thumb lever can be temporarily rotated out of the
way to allow for stronger thumb grip for extreme maneuvers without unintended thumb button
input.