Scotts, it's almost a spinner. I've forgotten my PAP, but it's a very low track with a lot of tilt. On an old silver buzzsaw with a wt. hole on the PAP (I'm guessing the PAP is aroung 4 1/2 inches. I could tell you my old PAP before I changed my release, but that would be of no use) the hole is almost at the direct top of the ball thru the midlane. With this much tilt I'm not sure that the notion of axis rotation has any meaning.