I agree with anotherwindup. The ball is a monster at 1000. Unless you have blazing speed or some extreme axis tilt, 600 would likely be too much, causing the ball to roll out. If you're on that heavy of a pattern (I've seen them) and it doesn't break at 1000, it likely won't at 600 either.
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J.J. "Waterola Kid" Anderson, the bLowling King : Kill the back row