I have tried several different surfaces on mine. I'm currently using 4000 grit without polish. That seems to work best for my style and where I bowl.
The OOB finish never worked for me. But mine was sheen when I got it. I even took it to an almost mirror polish, which gave an interesting look on the lane, but the 4000 grit seems to be the best.
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Nine in the pit with the Tenpin left standing. dooooh!!