Not sure, but, storm used to put the word pro on their pro models, usually close to the cg area.
I have a regular blue thunder. If the one you have doesn't have the word pro on it somewhere, I would assume it was not the pro model.
From what I remember, the only difference was the density in the weightblock was set a tad lower in the regular model than the pro model, but the cover was the same.
( ON EDIT) MainePBA seems to know what he is talking about. Perhaps he knows the specific ball and has some insights to it.
Good luck. Mine is a great ball when I need it to be.
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What did you expect, something PROFOUND?
Good transactions list in my profile
My Bowl.com member pageEdited on 3/26/2008 8:04 AM