To get to the point:
There is a tick noise, initially thought to be Spring/Retainer interference with the rockers: false, no new wear marks, everything is oxidized, and proves to be hand grinds.
Rockers oriented properly, shafts don't look terrible, rockers don't look terrible, pushrods are straight, lifters are staying primed, springs are not broke, shafts are torqued.
still ticks.
Exhaust gasket doesn't look happy, waiting for a new one to come in.