I changed the lifters or (lash adjusters as they are called by the dealer) as a fix for the tappping but it still tapping . In during a search I came across lifters(lash adjuster) that have 3mm holes in the oil distribution hole verse 1mm holes in the dealer part . But I really want to be sure this will fix it before sending more money . Has anyone heard of this as a fix .. or what else could it be .