It appears from the picture, and a couple friends intakes that I have seen, is part of the problem is the "screw-in portion" of the pcv valve hose is mounted on the side of the trickflow upper intakes, instead of underneath, like the factory/Edelbrock uppers are.
I do not think it is a problem with the pcv valve grommet location, but where the intake to hose connector is located. Locating it just that much further by it being directed more toward the driver side, than the center of the back of the block.
I am sure the reason they locate it on the outside is to clear taller valve covers...