OK shoot me. Glad someone is trying to help the poor guy after all that work.
I had another thought though that I kinda don’t like mentioning. I wonder why the core went bad in the first place? I’m just wondering if it over-heated and blew the thing and he didn’t notice it? I guess another reason for just changing the thermostat but hope there isn’t a head gasket issue lurking in there too. Probably not but I’ll feel better when the core is supplying constant heat.