Tried another head gasket, with same problem.
With 80+ psi into the cylinder, pressure was less than 5psi, the leakage is blow by, no air past the valves.
No hole in piston that I can see. I even put some oil in the cylinder and it did not help?
Will pull the engine next weekend, but in the meantime, going to cut and drill some 1" thick plexiglass to make a pressure check tool that I can bolt over the cylinder of the block, and also bolt to the cylinder head to check each independently.
If it is just rings, I already have a partial set on the shelf, and may have that cylinder re-honed. Need to make sure there is no crack in the cylinder which would need a sleeve.