It appears that I have a coolant leak between the subject fitting (see pic) and the head. Previous owner refurbished the cylinder head and perhaps did not properly install / seal the gasket, I assume. Can the branch stub be removed without removing the intake manifold? Looking at things including the pic it appears that it can. Hoping I can carefully remove and reseal. I know the gasket is shared with the intake manifold. Also wondering if coolant can leak through the stud similar to how studs can leak oil on the exhaust side.