Have been reading numerous post of this ball (Black Ops) and notice one thing about when some bowlers/staff, in reviewing, change the cover from the OOB 1500 polished to, say, 2000-3000. Said bowlers / staff never say that they re-polished their ball(s). Always, I took it up/down to whatever level of grit. Since Doom stated to me that this is the ball I might want to try (and I agree. 1st 900 Global 4 me), I'd very much like to know all I can about changing the cover if I decide to go that way sometime in the future. Thanks for any and all responses. Jim