Looking at the pictures I think the cams are OK. Notice the one cam has the lobes almost 180 degrees apart, and the other has them close together. That is what SOHC cams look like. His problem is the length of the valves, and what he perceives the problem is with the elephant foot adjuster scrubbing over the top of the valve. He claims this is going to break parts. It's not, at least in a drag application. I've run those adjusters to 7800 many, many times. The problem comes with sustained high RPM over 10-15 seconds, as Bill's videos show. On the dyno, or at the drag strip, the elephant foot adjusters are not an issue.