I have .091 off the block as well.
So I hope around 10.75.
Steel shim gasket.
That other head should have been at least 12 something, but that is another story.
Man I appreciate all you guys following along.
I just ran it again with water and I don't see any mixing.
I let it get to 200 deg. or so.
So tonight I will change the filter, run the valves, install new sparking plugs.