Guys,
Unless my memory fails me, the Sling Blade is a polished pearl. So unless you sanded it, or it is tracked out, the factory finish should be about 1500 grit polished.
Since it worked so well for you up to now, why not leave it alone (if you can afford to) and get a mild polished solid to deal with what seems like a spotty condition? Since you sometimes can't get it long enough and sometimes you throw it through the breakpoint, a ball like the Sonic X solid or the AMF Scamp or even the Columbia Fear or SUper SOnic, if you like a lot of backend, may work on this condition.
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"When we choose an action,
we also choose the consequences of that action.