I threw my Raging Inferno at a NABI tournament this weekend in Albuquerque on some old wood lanes.  Looked at it last night and the ball has super track marks on it.  I want to resurface the ball but do not know what grit to use either in stair step resurface or factory specs.  If anyone can help let me know...

Thanks...
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 "DO or DO NOT. There is no 'Try'" -Yoda