Okay, I had my brother install my wire looms, beause I had a lot going on. Come to find out, When he took the "wing-nut" valve cover bolts out, they had a peice of metal shaped like a "V" under them. Well, I just found out, he dropped one or two, and didnt bother putting them back on.... because he didnt think it would hurt anything. Could this be the reason I am hearing my valve train "knock"? I noticed the knock the first time I started it up after the wire looms. Could there be air escaping around the bolts, possible making my pcv valve not function? Or could this be any cause at all for that noise? Thanks in advance........