Fuel rail firewall side leaking gas?

[fixkick]

yes, pro shops take that head and bake it back to unwarped (over heated heads warp) then mill it.
if your shop dont do that, then you put the milled head back and as you drive it wants to return to day one CASTed shape and fails again.
the process is called normalizing.
ask pro head shop about this, it's standard now.

this is like #1 reason for reworked heads to fail( overheated) the warp and the shop skips this vital step.
and not getting surfaces right.

Most engine are damaged from lack of oil or allowed to overheat.
early.