For those who know what I'm talking about, on some of my equipment I black out the pin, cg and logo sometimes.  To me, it can make the ball easier to read.  I have a 2nd dimension that I plan on taking with me, but the entire pin, cg and logos are blacked out with a sharpie.  Would this cause a problem?
--------------------
www.bowlingsolutions.com

Bowl to win!!!

Move left, hook it more.....

Tommy Jones and Kenny Simard are Gamecock fans...are you???

I wouldn't be able to point to it in a rulebook, but I've heard (from reputable source at a ball manufacturer) that altering the markings on a ball (whether that be blacking out the pin and cg, changing the colors of the logos, etc) could constitute intentionally modifying a ball from its designed state. (I probably didn't word that correctly there might have been a better way to say it, LOL)

Granted, this sort of "technicality" would be an extreme response I would think, given that it would be hard to prove that it caused a competitor an "unfair advantage", but I suppose you never know what they might say about it.

I would think you could try to contact the USBC and ask what their take on it is before you take it out with you, just to be sure. I wouldn't want to get that far and not be able to use the equipment I brought.
--------------------

Courage is not the absence of fear, but rather the
judgement that something else is more important than fear...

My teammate took 2 Hy-Roads with the labels and pins blacked out and nothing was ever said about it. He is also leading singles with one of those balls so its not like he slipped through.

It is only against PBA rules to black out logos.  USBC has no such rules.  I used to black out everything logo wise also, still use black grips and slugs.
--------------------
Me, a couple balls, two lanes, all that is right with the world.  Bowling is my haven!