Well taking the cover down all the way to 800 will definately give you a much earlier read and a more even reaction through the lane. It should be very noticable and my buddy actually has a Spit Fire pin above bridge, cg kicked out just a bit (5" pin to pap) and its at 1000 grit no polish and it reacts super smooth on medium +.
I'd suggest just lightly hitting the coverstock with a 1000 grit pad or so to get the shine of first and adjust from there, just knocking off the polish can make a huge difference.
Good luck and bowl up a storm!
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Just another aspiring junior bowler who is just starting to get there.