Well first off you have a very unusual ball. From what I read about it that ball has a strange core design that actual produces more flare than is allowed by current USBC rules all though your ball is legal since it was grandfathered in. It's hard to say exactly what the problem is without seeing you bowl but a few things to consider.
1. with the unusual core if your driller didn't know what he was working with it could be drilled incorrectly
2. the ball maybe burning up high flare balls use the hook potential of your ball more quickly especially in light oil conditions
3. your release my not be generating the revs necessary to cause the ball to hook
I would talk to the proshop operator who drilled the ball have them watch you throw a few shots and they should be able to let you know what the problem is. Contacting a qualified coach for some lessons would be an excellent idea also.
Bookmarks