From what I've seen lately there is a good chance you wiped a lobe or more. Seems to be more prevalent these days. Did you use soft springs to break it in? Did you use cam lube (moly lube like) on the lobes and lifter bottoms? Might want to check the valve lift out everywhere. Drain oil and look for metal in pan and filter for evidence, but the valve lift will tell the story.

Kitz