Or, you could try a hot water bath and soak the oil out of your ball...your pro shop should be able to help you understand the details about hot water soaking...
Also, is it possible that they've changed the pattern on you?
Another question, what has your shop been cleaning your ball with?
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Andrew Loose
1/2 of ABT's Finest
"Strike for show, spare for dough, split for D'OH!"