The second picture where the hose connects from the side of the valve cover to the inlet manifold is a breather hose and is in the right location. Is there a vacuum hose going to the distributor? The distributor needs a vacuum source from above the throttle butterflies or it would be getting constant vacuum. I have a feeling the port that has no hose attached is the distributor vacuum connection, and the one you have indicated below it connects to the EGR valve on the side of the manifold.