My specs are rougyly the same as yours, i track a little lower too, and my n'sane is all backend. The guy i got it from said it didn't do anything for him. I have found for guys that aleady get the ball down the lane this ball isn't for them.
I have a real problem with over/under cuz i'm slightly rev dominant. This ball really smooths things out for me. I really don't see much overall hook with this ball, just a strong read and smooth move off the spot.
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AIM = y2moe99