Start off with it with no weight hole and left in out of box dull before you do anything to it and see how you like it. If I was able to bowl I would have 3 or 4 of them by now, so it is a good ball.
Drill it fairly strong with a 4" pin to pap and keep it closer to the val like about 20 to 30 degrees this will give you a better reaction on the back end and get the ball into a heavier roll when it hits the friction. Put the mb between 45 and 60 degrees from your pap this will help keep the ball aggressive at the break point.
Let me know how you like it.
Well, don't know the specifics other than 4" and Pin Down. But, let me tell you that I went on the Lane from Hell (End Lane; no league bowling... only open) and after a game of test driving, I was able to use this ball to carve a nice line in an otherwise unshootable condition. I was able to stand 23, roll 9 out to 3, and the ball held the line and rolled up with a strong arc. If I was a little lazy on the release, it would leave 10's. Into the 3rd game I was able to switch to my No Limit (see description above) and roll the original line with the breakpoint coming a little further down the lane. So, the 3 scoring games were 650.
It's nice to have options!
ETA: Will have to have weight hole installed. Supposedly it's 15/16's right now, and my Driller would like to add a hole to measure it down a little to keep it firmly in the "safe zone". But he wanted me to roll it a bit to see what shape I would like accentuated.