Always look to what was just done, he removed the calipers. Nothing else magically broke while he painted the calpers.
Master doesn't have air in it. You guys are missing the beauty of what happened. Kid took the calipers off, painted them and put them on the wrong sides. You can confirm this by noting if the bleeder is below the brake line connection. If that's the case, tell boy wonder to swap them onto the correct sides and rebleed. Some of us call that a "Swigglet".
On the SC whistling. Look at the bolts closely and smack him for starting to pull the charger. You know he was going to paint that too. The gasket is called an upper plenum gasket.