Yellowy brown glue stuff....wtf....
You mean some idiot actually GLUED the HEAD GASKET to the motor????
Ay ay ay ay ay.
Seriously, you should try to get it back to metal. Doesn't have to be shiny. Try using a carving or other long knife to scrape with. I find having the blade at an angle of roughly 15 degrees works best, you can use a bit of force without much worry of putting a deep scratch in the deck.
Also don't forget to check the block deck with a straight edge!
Proud TQE Operator and President of SEFAG - the Society for the Elimination of Ford Automatic Gearboxes
Pacemaker headers + 2.5" exhaust
EF Fairmont interior
Lowered King springs
5 speed manual
Newest mod: EF Ghia wiring loom and dash