Its kinda funny that I've raced small and big block Mopars for 40 years and NEVER had valve train issues and had to rely on hookas pokas to solve these issues. But then again when I set up rockers on ANY application I spend hours filing, fitting, shiming, and when done EVERYTHING is scribed for position. That way if i ever have to remove something in a hurry at the track everything has its proper position. Every hold-down and every rocker goes exactly in its proper spot anytime they are removed.