Solved the issue. I don't agree that anything I said was sketchy and I take that as an insult.
The radiator wasn't bolted down and caused the Tstat threads to strip, the gaskets were indeed compressed. Got a couple of them from rockauto for 6 bucks and had no success.
I did a temporary fix via https://www.youtube.com/watch?v=soOvDuwfnQA that video and some soft 14gauge stranded copper coated zinc wire I had laying around in bulk from ebay. Eventually I might do helicoil or a bigger threads with custom bolts at some point.