valvetrain noise 5.9 magnum

And as I said I still need to rule out the pcv valve, I can only hear the noise while its at an idle, when I give it some throttle I don't hear it anymore. When I get my carburetor back I will make a video and post it and maybe you guys will be able to hear it. But in the mean time I guess I can take the valve covers off and check the torque on the rocker arm bolts. But I thought I read the engine had to be turned over and the rocker arms needed to be an a specific spot to check the torque on the bolts?