Another ball you may want to look into is a Fast Pearl. The XXX Factor is old by todays standards and high end from 5 years ago is now mid performance today. I believe a layout where you get the weight hole down will give you a look more similar than trying to replace a high end ball of years ago with another high end ball that will be stronger overall.
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Steven Vance
Pro Shop Operator
Striking Results Pro Shop
Red Carpet Lanes
Duluth (NE Atlanta), Georgia
If anyone out there is worried about the scores being too high, try duckpin!!