I see most bodygrips have 3 notches in the dog. Starting nearest the jaw, with #1, why are there 3 and what difference does it make whether I use # 1, 2 or 3? I am guessing that #1 means the springs are compressed more----thus it takes more pressure to move the trigger wires???? Is this right? And which notch do most people use. For some unknown reason--I have always used the middle one.

Ron