Polished balls should always clear the heads better than matte balls.  The trouble I have with polished balls is down lane at the breakpoint when I'm bowling on a similar shot to what you described.  Too much carrydown and a polished pearl is over/under for me.

My Wed. night league is on the same lanes that are used earlier in the day by a ladies league that uses mostly low flare plastic, rubber and urethane balls.  

I usually have success attacking this broken down shot with a 2000 abralon L#1 BCB at first, but have to sometimes switch over to a polished pearl later to get the ball to retain any energy for the breakpoint and pins.  On rare occasions I've used the same ball the entire night and just made sound adjustments.

The advantage you have with the Sniper is that it's a particle pearl, so even polished it should clear the heads well, but still bite at the breakpoint as long as there isn't too big of a puddle there.  Some people can also move around the burned up track area and away from the carrydown with the right ball and still score well, but usually I'm not as comfortable in those areas.
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"A word to the wise ain't necessary -- it's the stupid ones that need the advice."  Bill Cosby
"Never argue with an idiot. They bring you down to their level and beat you with experience."

J_Mac and Charlest-

Thanks for the quick replies.  I think I'll try some polish by hand and see what happens. I have a Black Widow and Power Groove in case the shot allows me to move in or out.  This shot just always gives me problems.  I'm averaging about 12 pins lower in this league because I can't figure out where to play.

Thanks again!

-mugrad