Place pin 2" from the vertical axis line. Place pin 4" from the bowler's positive axis point.

Similar length as the standard drilling with more backend than the pin above fingers drilling -- but still less backend than the standard drilling.

For Full-Roller Ball Track Only

Pin Placement: Place pin 3 3/8" from grip center at 7:30

Mass Bias Placement: Mass Bias at approximately 2:00 position