Clearance between the rockers and the spring. I,ve bolted the same rocker assy to the original 587 heads with similar results. I,ve read all the geometry stuff and think mopar has always been off a little
Yes, that needs to be fixed by relocating the rocker shaft. That's the only real "correct" way. Contact Mike @B3RE and he will help you. Anybody that says different is blowin up your skirt. You don't grind on rockers to "fix" that issue.
.......although I do admit I kinda like the abrasive pad somebody used. That's much less invasive. Still, that does zero to correct the root of the problem, which is incorrect rocker shaft placement.
