Yes, you are correct. The oil filler/breather cap should be black on a 1962, the 1963’s are red. Your PCValve is on the left valve cover. I have had the same problem with the exhaust pipes to and from the turbo unit. The aerosol, high temp, paint will not stick! I have only found the Eastwood high temp brush on paint to last. It has held up on my cars for years.
Your car and engine bay look really great!