I am installing harland sharp roller rockers on some brand new heads and I have a question about it. I have found alot of walkthroughs for hydraulic cams but I have a mechanical cam and am not sure if there is a different process for it. from what I understand I have to rotate the engine to top dead center for the first cylinder and then keep rotating for each cylinder so that the lifters are in the lowest possible position when i tighten down the rocker arms. I am unsure of the best way to do this. could someone please walk me through installing them? thanks