i did it two days ago.. it was my third time.. its not difficult at all.. ill post the tech article tonight.. im planning on starting up my tech guide again tonight so there will be lotsa info... but it helps out a lot.. your car will get rid of that nasty ticking noise, gas mileage is A LOT better, and your car just rides overall smoother... and my advice to you is that if it says to tighten it to .006 - .007 inches then do the lower number cause its gonna be lose again sooner or later.