The factory head gasket leaked like a sieve. Moistly water. I had to pull the head again and install the gasket using Permatex Copper Spray-a-Gasket (TM). It still leaks a minuscule amount.
Also, the ford gasket doesn't allow for the gap between the head and the block behind the water pump. It needs a generous blob of sealant there. I got that right on the second install.
So far so good on the head repair, (Cold Stitch) Little or no smoke on startup and no water on the piston on tear down. If you need a head repaired, I'll post the name of the company who took care of me. It was about 350 bucks 500 cheaper than the other rebuilds. AND they were extremely responsive via Email AND Voice.
Dave