Thermoquad idling issues

Bewy said
Don't think that is a crack. It looks like the wells have been re-epoxied & some of the epoxy has run down the side of the bore.
Every TQ I have seen that has original epoxy, epoxy was white.

Scraping at the suspected crack with a pocket knife. Zero epoxy is coming off and it feels like there is a few thousands difference in height between one side or the other of the line. Maybe the rebuild company put epoxy over the crack to try and cover it.
This is what I saw last week leaving a mark on the gasket. I cleaned the excess epoxy off and didn’t really think much of it.