One of my GC controllers is different from others in that the L button doesn't "click". I've taken it apart and cleaned/made sure there was nothing unusual about it but I can't seem to figure out why that's the case. It's been like this ever since I got the controller new. What part of the shoulder assembly causes the "click" and what can I do to make it click? FYI, this isn't for a portable, just for a plain old GC controller.