some time ago bowling digest did a piece on walter rays' equipment and his "oil" balls had the pin next to the ring finger, the cg stacked or swung towards axis side of the ball, and a balance hole down below the midline. these balls were either dull or smooth sanded particle balls . for less oil, his equipment had the same pin position but the cg was swung towards his grip center with no hole. these were usually reactive balls, some smooth sanded, and some polished.
Edited on 11/17/2005 10:06 PM