^^That because it is not an adjustment actually. It is a stop screw the tighter you make it (turning clockwise) the more the stop sticks out and the less travel you get. As the gripper travels it closes the less it travels the loser it is.
Everyone has the right to be stupid... it's just that some people abuse the privilege...
Balance - 31.0 cm, Weight - 358 g, SW - 346 Kgcm^2