Removing a refractory gasket; gasket removal solvent?

I wrote that I did that, many times, without success.

How many times with Berryman’s?
Connect the dots…i say soak in berrymans, you say cant soak a manifold, i say brush it on, you say tried that…
:confused:

Thank you for the education. The closest term I was familiar with was refraction of light waves.