I'm a tweener, don't have my specs on me at the moment. I have the pin up, and a weight hole about 4 inches away from the pin to level out the hook. Before having that hole punched in it, the ball had a bad angle and left many tens and fours.
For the most part I enjoy this ball, it is fairly reliable and very reactive. I don't like that it doesn't show much of a lane transition when I use it. It just shows 5-7 pocket shots in a row then it jumps an extra 5 boards without showing any 9s or 4s or 7s from a higher hit or sharper angle first
I have found that it works great for the first game or two on most of the kegel patterns. On the middle road pattern this ball gives about 3 boards of room and hits like a truck on every shot.