Blueprint 408 cooling system questions.

It’s obvious the guy doesn’t spend much time here and that his level of tuning, diagnostic skills and willingness/required involvement may not be enough to sort things out. He did state that he didn’t know where to start.....You can’t focus on temperatures if the fuel delivery, carb settings and timing aren’t dialed in to where it runs consistently. That’s where I’d start. Sounds like a mess to me