one thing i can add about the adjustment is this, if you can use a remote starter switch or make your own i have found a great method for the adjusting sequence.
first remove the valve cover and connect the starter switch
bump the starter until the first lobe on the first cylinder (exhaust valve lobe) is pointed toward the oil tube. if you notice there is the one pointed to the oil tube and one pointed straight up. the one pointing to the tube is the exhaust ant the one pointing up is the intake,(the exhaust lobes will always point to the tube and the intake lobes will always point straight up.) adjust them, bump the starter, if you look there will be another one pointed toward the tube and another pointing up, continue adjusting and bumping the starter until the original exhaust cam lobe is back pointing to the tube, once you are there they are all done. the only times i have seen this not work is when the compression is low, or if the valves are too tight causing low compression. this is how i do it when i service customers cars at work.