Damn. I'm doing it right then. Yes, lines on cam sprocket line up with the head. It's running great. Valves are adjusted right. What's weird is one of my motors was quiet until I replaced the rings, valve seals, lapped the valves, and cleaned up the head. Afterwards, it sounded just like my other motor both before and after I did the same work. The timing chain needed to be replaced but it made no difference in the noise. I may tear the top end off the spare to see if I can spot anything obvious going on that might explain the noise on my good motor.