As others have suggested, it's quite likely the intake bolts are wicking up the oil. Try some thread sealant on them and that will likely solve the problem. I used thread sealant on all the intake bolts when I installed my intake last year and haven't had any oil pooling where your does. My neighbour replaced his intake (with no thread sealant) a month after I did and he had oil pooling. He put some thread sealant on them and no more oil.
