I witnessed the cam trying to lock up. After it was finally adjusted right, it did start spinning. It was on the tight side though. I was also there when the car went on a test drive and drove just like it was supposed to, before and after the water pump install. Its hard to say its 1 person's fault. I know of another local person that has had problems with a sohc bisi cam. It was just one of those freak accidents, trust me i know all about them. But as far as the shop who built it, everything is always done by the book and experience. Not taking sides of anyone but just giving my opinion.