Sir Bowl a lot-
I have an Ebonite V2 Pearl that I used it on. I got a free sample of the CPR when attending a Track seminar. The V2 Pearl had close to 800-900 games on it...I do clean my equipment often, and I had resurfaced it twice, but it was starting to really lose reaction at the breakpoint. After using CPR (which is supposed to remain on the ball for TWO hours, not one...their directions were printed incorrectly, according to Del), my V2 Pearl is much better handling oil throughout the entire lane and is noticeably stronger at the breakpoint. It's not as big of a hooker or quite the carry that I had when it was NIB, but it's very good. Also tried it on a Power Diesel, and the results were satisfactory as well. I would highly recommend CPR for any ball that you just don't want to put in the closet.
Hope that helps!
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Jeff Voght
PBA Eastern Region Member