Well, I was peering into my engine yester day, and I noticed the top of 2 of my retainers were broken off. So then I saw a piece of the retainers in the bottom of my head. SO now I have to put 2 new retainers on my engine. I was wodneirng if anyone had any instructions like from a manual on how to do this. I know you have to take off the Oil Rails and the things below it that hold down the cams, but do I have to take the cam all the way off? I don't want to have to redo all of my timing and eveything, because I have never done it and I don't know how to. Also I don't have a timing light.