[Peter Zimmermann]

I would approach the rocker shaft bolt issue from a different direction. I've found, once they're tight, that the best thing is to leave them alone. Before attempting to re-torque a rocker shaft I get out the old dentist's mirrors, a small flashlight, and check for oil seepage at both ends of each rocker shaft. If there is some, and it will be obvious, then it will be worth it to check the shaft tightness. If the ends of the rocker shafts are dry there is no need to do anything to them. Oh, and yes, the rocker arms will always move sideways on their shaft...