and was appreciable and visibly evident. The engine had 220 K on it. Measurement obatined by comparing length of new vs old hanging. More significant was the main rail wear, but you cant replace that without pulling the cylinder head. Hope to post a Picture tomorrow of the main rail wear. There is a Tech Service Bulletin on ALLDATA that says that this rail was redesigned to add more wear material to it...even as quirky as I am, I'm not pulling the Cylinder Head