OEM Rocker Arm Side Play

MOPAROFFICIAL said
Might be worth having the valve job redone by a machine shop that can get all of the intake seats the same and all of the exhaust the same. There will still be a difference between the two in height but by then it should be like .020 or less between intake and exhaust.
Other option is cut stems to equalize intake stem heights on each head then exhaust to try and end up in the spread or separate lengths per int/exh instead of 3 and a bunch of varied preloads/lifts.
Another option...5.011 vs 5.025...other words..+.050 vs +.100, .150,.200
Play with valves and cutting stems. If one was equip to do so.. could be attacked a few ways. Since we know the seat depths are all over the place but in a bad way..
how are the spring heights?
Sounds like shims or locks or both. I just used -.050 locks and .060 shims to bring in the height needed...

All that is valid and an ideal approach, At this stage it’s mostly baked (heads bolted)

funds are what they are so really no room to have gone that route. .....you know the story, other than disassembling the heads to check everything, swapping springs for the cam and setting the heights for the open pressure (not just installed, we shimmed as needed) The valve job ootb is well known, a 2-angle, but they seal. Why I didn’t check the valve heights back in late 2020 when we got them I don’t know......oh, actually I do. I was neck deep in my stuff and his heads got put on the shelf right away. With more thorough inspection and measuring earlier on we would have at the least gone Adjustable rockers instead of using these rockers. Doubtful we’d have had any corrections done.
Using six pushrods @7.325”, five @7.350” and five @7.400” and the least preload will be approx .050” and the most (1) will be .0875” most will be .0625”
An acceptable range I think most would agree.