u/quonkodermis

Coolant leak. Manifold removed.
The chamber on passenger front of heads has a groove on the corner that my fingernail catches.

There is black residue, that is not the groove. The groove is on the bottom right side of the chamber as it is pictured. The black residue area is mostly flat now.
I’m wondering if someone in the past already used a gasket maker compound to treat the grooves?

This is my first intake manifold job so I’ve struggled to get as clean as possible. Wondering at what point I can stop and if this needs further attention, or maybe I send it against general advice I have already read…

Thanks, Y’all.