I did the same thing, but arrived at it differently. I threw a couple of my other balls and noted where the first oil track was, then measured how far I was tracking from the holes. I then drew a line down the centerline of the tire tread, and measured off the same distances. Drilled away, and it rolls pretty smooth (when I dont botch the release!). Everyone likes it 'cause it's different (only one in the house so far).
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Jon (in Ohio)
CHROME WON'T GET YOU HOME!F.O.S. Proud Saw user... "Measure twice, cut once!"NOTE: Ball list moved to profile to make it easier for SrKegler to follow the thread