I've been throwing Storm forever and the only issue I've had is with an Original Paradigm and an X-Factor ACE. Both developed small hairline cracks around each finger hole(drilled with inserts) immediately after drilling them up. But to this day, neither one have gotten any worse. In fact, I threw the Paradigm last night and shot 2 series of 703 and 719. Obviously the small amount of cracking doesn't affect the balls performance. But then again if you can get Storm to replace it they normally don't hesitate to replace bowling balls with defects, there Customer Service is second to none.
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Pat Patterson