Are you using springs or spacers? I ran Crane ductile iron rockers that were bushed by Rocker Arms Unlimited with a 0.590” solid roller. They supplied me with spacers and shims. I apologize I don’t know the exact number I used for side clearance (I think it ranged from 0.015” to 0.025” per pair). I also had a wear line on the valve tips, but parallel with the rocker shaft like you’d expect