If you're getting 7-9" of flare (a VERY high amount) and it seems to be too strong for the oil you see, polish is one of the next possible steps. The other one is a finer grit of sanding. If the original box surface is 1500 grit or so, then either
- take it to 2000 or even 4000 grit (abralon pads), or
- add a light coat of polish.
If you want a to try a heavy coat of polish, personally, I'd be inclined to first sand it to around 800 grit, then add a medium coat of polish. If you get to a very fine sanding and then add polish, you may be better off with a weaker ball.
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Bowling: Just like hand grenades and horse shoes, you only have to get close.
Life: Deal with what is.