I took one of my valve covers of today, just to take a peek... I will be doing head gaskets and valve seals with head studs or at least new bolts soon, in anticipation for the turbo!! Anyways my push rods had the copper colored end agianst the rocker, my two manuals say to be sure the copper end goes into the lifter. Do they come with copper ends on both ends? or was this installed wrong some time ago??