Ford au2 head gasket

[allenford]

While driving it temp sits n\o water level is normal.

Bit of a time it goes nom\al loses water that's sign that head gasket is bad?

Any idea?

Also ruff idea how much it cost to get cylinder head shaved?

Idles great
Drives great
Doesn't overly heat just first drive onces it sits normal stays normal.
I fixed fuel consumption doing 609ks on city and 918ks on highway.

Which is why I want to double check its that is the problem. Before I repair it

Thanks guys for any info