When I removed the 12 bolts on the valve cover to put in a new replacement valve cover gasket, I noticed three of the metal sleeves in which the bolts goes inside have missing rubber/metal washers.The rubber/metal washer together/combined is in one piece. Those rubber/metal washers goes on the outside of the bolt sleeves, not outside the bolts. In addition, inside the 6 spark plugs holes, oil is everywhere (spark plugs remained intact and had not removed). The old valve cover gasket and the six seals looks worn and torn. The three coils are fine, just dirty with oil. Spark plug wires are in good shape and, again, dirty with oil. Will clean up the coils, valve cover, and spark plug wires. In addition, I will replace with new spark plugs due to oil around the old spark plugs, just to play it safe as well as clean up the inside the spark plug holes once removing the spark plugs prior to replacing with new spark plugs.Can anyone tell me what is the name and part number of those rubber/metal washers that goes outside the bolt sleeve? I can't seem to find it anywhere and maybe I am using the wrong part name. I need those rubber/metal washers before I continue to replace the valve cover gasket. Any comments/feedback is greatly appreciated.