Easily the worst Storm product I've ever own, and I"ve thrown many successfully in Regionals and National events. At box finish, this ball did nothing but push, even when hitting the drier areas, did not want to recover. This ball was comparable to a worn Spitfire, except the Spitfire finished much harder. We took it to 4000, and had very little effect (Tried numerous angles to see where, when and IF it would read the lane, and never had a clue.) Took it to 500, and still had little effect. Storm Technical says this should be reacting good, but everyone, including the Pro Shop is at a loss for this reaction. Worst effort by Storm Products, only offset by the poor Storm Technical person I contacted.