If you’ve owned resin bowling balls, chances are you’ve experienced at least one cracking. I’m not talking about a small crack in your bridge — I’ve gotten those forever as I use just a 1/8 bridge — or around your finger holes. You can bowl through those or plug and re-drill your fingers and keep using the ball, which are things I’ve done for years. I’m talking about a large crack over a decent amount of the ball that makes it unusable. It...