doesn't really sound like you need a new ball. You should try to make some adjustments, especially if you're in the pocket with the Ice and just leaving 10 pins. Carry is dependent on the ball's angle to the pocket. Try moving your feet left some and throw the ball right, trust the ball to make it back to the pocket.
I'm not the best at explaining adjustments, I just know how it works for me. Hopefully someone else will see this and comment on adjustments to make