I got a used 3rd or 4th (not completely sure) generation prior wcr, and broke it on my first race with it. i ended up winning the provincials on it, but it split between the base and the core. I was riding Catek OS2's without any protective layer, and it probably didn't help that it was a used board from the racing circuit.
I talked to Bruce about how to repair it, but because of where it split, it was irreparable. I loved that board, even though i only rode it for two days or so, it's still one of my favourites.