From my personal experience with V2 power. After drilling, the ball had 3/16 side weight. It was a love / hate relationship. When I got on the right condition, it was lights out. Most of the time it was in the bag. It had a soft backend reaction and it was speed sensitive.
I had my pro shop fill the weight hole and drill it out to get 7/8 side weight. Completely different ball. Now it finishes hard whereas before it half finished. Shot 769/1002 with it the first time after changing the weights. Just the visual of how it was reacting in the mid lane and the backends was a confidence booster.
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Rick