I like the advice SVstar34 gave you. His idea just makes good sense.
I know the Rival was designed to be the complement to the Resurgence, but I have seen a lot of people throw the two, and in my opinion the Momentum would be a better option with a weaker drill. Somehow the Rival ends up being condition specific a lot of times.
However, even having said that.....I'll bet you could get the reaction you desire, just by changing the surface of one of the balls you already own. Remember, the strongest and easiest change to make, in bowling ball reaction is the cover of your ball. You might want to try that first, before you explore buying a new ball.
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Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
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