This guy's threads o_O
Is he for real?

Anyway, you know which ball is yours because most likely the holes in the ball that isn't yours will be quite diffrent
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And if you still struggle with finding your ball, get your PSO to give you colored holes. On my Grudge and Freak Show I have green thumbholes.
It was what the PSO had, didn't choose them because I struggle with finding my balls. My fingers are much smaller smaller than most I bowl with.