Intake manifold question

[JREs69er]

I had recently replaced my intake manifold and carbureator and I am now seeing some oil showing up near the center bolts of the manifold. It is pooling in this area but everything around the valve cover is dry. Any ideas on where this may be coming from? Is it possible that the oil is seeping throught the bolt holes on intake? It only appears at the midpoint of the intake on both sides. Any help would be appreciated.