[Chevyrestorerman]

You still need to address the wear in the head that is used for the push rod guide. Being able to say there is not enough wear from your chair at home is really good. New rockers with screw in studs along with guide plates is the true fix. If not the problem will never be fixed right. My opinion only. If more debate needed we can get more into this if you like. Drilling out the hole in the head that is used for the push rod guide is a must allowing the bolt on guide plate to do the work of keeping the push rod aligned with the rocker.

Just to add to this:
Was a leak down test performed prior to tearing engine down ?

Was a compression test performed ?

benchmark information to highlight weak areas in the engine, reason "why" perform tests would assist in repairing your engine === Full rebuild or fix what is broke based on test performed before tear down ======
Heads are already off, send heads over to machine shop and have what I mentioned above done or redo this again in 2600 miles.