I've converted roughly 15 balls to include a MoHole in them. Ranges from Pearl-Solids, Asm-Sym, older to newer releases. I must say the most notable changes occur when using older Symmetrical balls. The newer releases didn't have the noticeable differences experienced from older releases. The greatest change in ball dynamics was on the Combat Zone Tracer, Wild Card, and Red Alien. I suspect the MoHole greatly benefits balls with smaller size cores. Any thoughts on this?