Hey frock,
If you want the ball to retain it's natural look of length and backend, I'd highly recommend you to not use the scotchbrite. The scotchbrite may start to remove the polished finish. You can also apply a coat of Magic Shine after you're done with the Clean and Dull or just use Magic Shine to help clean it to maintain that polished look. Hope this helps...
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Rick Leong
Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
Vise Inserts Staff