In general, 4000 grit is a valid alternative to 1500 grit polished, for most balls. If you take the 1500 grit polished to 1000 grit, then 2000 grit then 4000 grit, it should handle the same amount of oil with slightly earlier hook and slightly less snap than the 1500 grit polished ball.
Every ball and cover is slightly different from every other ball, even when the manufacturer says "1500 grit polished"; you have to judge every ball with which you do this on an individual basis. There is no guarantee; I have found balls that don't react well and others that do, with this 4000 grit procedure. You really have to judge for yourself.
FYI 4000 grit dull is much more labor intensive than 1500 grit polished and to keep it at that level you need to use the 4000 grit Abralon on a regular basis to keep the ball at that level. How often is up to you, possibly as often as every 10 games, possibly 25 games; depends on how rough the lane surface on which you bowl is + how much you rev the ball, etc.
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"None are so blind as those who will not see."
Edited on 3/28/2007 10:22 AM