Adjust valves

With all this banter on how to lash valves, makes me wonder how a dealer service tech; who probably did not have degree wheels, charts; lashed the valves on a 273 in for service.
ECIO, EOIC is a process pretty hard to mess up, work down one bank then do the other, you are not doing this flat rate so it is not a speed contest on how fast you can do it with as few turns of the crank as possible.