I bought a pro-pin Paradigm recently, and I have a couple of other pro-pin balls.
It's hard to know what you're getting until you see it. I bought my Paradigm on eBay, from bowlingball.com. The ball had an 11-inch pin.
Fortunately, the pin, MB and CG were all basically in line or the ball might have been undrillable. We could have just drilled the ball "upside down" and used the negative pin position for reference, which would have given me a pretty standard 2-inch pin drill. But we left the pin over the fingers and put the MB in the palm. That meant a crater-sized weight hole next to the thumb.
What I got was a ball with a little early hook, a TON of midlane and nothing in the backend. Extreme hook/set ball.
My other two balls, though, have been different. I have an X-Factor with a 7" pin and the MB and CG on top of one another, and I got a fairly arcy ball with a big late move. I also have an AMF XS with a 6.5-inch pin that ended up fairly skid/snap.
It's a bit of a risk to buy a pro-pin ball sight-unseen, but depending on how it's drilled, it can be offer some rewards.
Jess
