[William930t]

You know the problems with a cold engine evaluation

As an experiment, try squirting some oil in the spark plug holes and do another leakdown test. Post your results.

Can you do a compression test as well?

Any broken head studs?

If motor is out, I say measure everything on top end for in-spec, replace as necessary. Send out heads & valves for service. If cylinders measure ok, then re-ring is fine. Also include, your choice of strong head studs, check flow of injectors, new hoses, seals, gaskets, thermostat, etc.

Where in Atlanta are you, maybe I can offer help.