How far is the pin from your PAP? I can't tell you how MUCH it will hook without that distance, but I can point out a few things. First off, you have a pretty angular drill with the way you explained it, so the ball should have been really angular to start. Now that you took it down to 600 grit, it will probably be a little smoother off the break, probably like a hard arc. It is also going to start up sooner now because you have a particle coverstock that is now dull. That's the most I could tell you without seeing you bowl.