Might help if you had some personal info -- i.e., PAP, rev rate, axis tilt, etc...but since I take it that you do not have any of this...
It sounds like you are bowling on a THS, with a "sea of oil" in the center of the lane. Furthermore, you say that you are hitting the pocket weak -- when you are standing at board twenty and throwing it out around the second arrow. My theory is this -- you are not getting the ball out past the flood of oil in the center of the lane, thus you cannot create enough entry angle to carry. In order to solve this, you do not need another ball -- if you have enough hand, move deeper and open the lane up a little more, if you have less hand, move farther right and play straighter, going up around board 5-7.
If you really wanted to buy a new ball from Brunswick, I might suggest the Red Zone. That ball is pretty angular at the back -- it might allow you to get enough entry angle. Also, it seems to be pretty versatile, which is always nice.
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I am the University of Virginia's Bowling Team. After all, one All-American is all you need.