Big W writ:

How it works is. The proofed face protects from direct flame and heat
exposure, while the filling material puffs up to cause a wider barrier and
dissipate the heat away from the metal.
So you need to pull it out and start again, I'm afraid. Sorry to be the
bearer of bad news. :-((

drat - the glue has dried,
i should have stayed awake longer last night..

[G]