I had it on a Storm Thunder Struck circa 2007-08. Problem is, you can't really drill "RICO" anymore because you can't drill a crater weight hole in the side of the ball.
What you have now is standard pin-in-palm and that's something different. A lot of pros use it but I tried it on a couple of balls and it didn't work very well. Probably because I don't have pro revs, pro accuracy and don't see pro lane conditions much.
I assume the real reason for the weight hole in the original RICO was to create a PSA on a symmetrical ball away from the thumb hole and increase the diff, because otherwise, no matter where the CG (and therefore the assumed PSA) is located, the real PSA is going to move to the thumbhole once it's drilled. So the modern RICO is just a really pin-down, stable drilling.
