By the way, If it was approved by the PBA, that is almost a guarantee that it had to have already been approved by the ABC.
If you use it bowl an honor score and happen to want the award that goes with it, I'd keep the box just in case. Did you email the USBC about the approval?
FYI The core is a high flaring one; be careful about weight holes and such.
BTM loved the REV-X; I loved the original DT balls,but I didn't have any success with the pearl. But back then I didn't know squat about drilling and coverstock changes.
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"None are so blind as those who will not see."