I believe that you are confusing "dud" with "weaker." A ball with a half inch pin compared to the same ball with a 4 inch pin will yield a different motion with the same layout. Don't believe me? Take any full cored ball with these pin specs, 5x5, which should not need a hole in either ball depending on your pap (I don't need a hole at 5x1^). The 1 inch pin ball will be longer and smoother and the 4 inch pin ball will Rev sooner and be more continous. I have tested this myself on the original Break about 5 years ago. I had to drill the fingers deeper, after the initial drill, to get the ball to sniff the breakpoint before 50 feet. The cg matters due to static weights, legal or not. You can go from 2 oz finger weight to 2 oz thumb weight with the same layout, based upon pin to cg distance. And yes, they each roll different.