i have experienced alot of lane one balls cracking at the bridge.when you drill the finger holes,make sure there are no air holes etc.if there are some,i super glue the insides of the finger holes, thus sealing them which makes them stronger.i then put in the inserts and glue them. i have several lane one balls and have seen alot of large holes especially near the pin when drilling the finger holes.they are still the best balls in the world though.....