A good PSO is worth it's weight in gold. I can't imagine a PSO not asking about grip and drilling any type of ball conventional that isn't a plastic ball. My local PSO is decent but I think he's been pretty hit and miss, he did mine grip perfectly and I never have issues with pain or thumb swelling. But my other buddy he completely messed up with the thumb pitch and made the span being short and my buddy has all type of pain. He's tried to adjust the ball and replugged my friend's ball but he still has issue with thumb swelling and some pain.
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