I've never had a ball really die. However, my main Nighthawk M2 didn't seem to be hooking much lately. I threw it against another M2 (different drilling, but similar enough) with much lower mileage to verify the change. I did the hot water/Dawn treatment. A little oil came out, but not much. I didn't notice any change in the reaction. I'm getting it resurfaced (hope some label is still left) and treated with Hook Again. I've heard some good testimonials from those who have used it locally. I'll post my results.
Let us know how your treatment works Andrew.
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Penn State Proud