A vast majority of aftermarket valvecovers don't even have a baffle under the PCV hole, so check on that. No baffle and it will guzzle oil.
Better yet, tell us what valvecover you have and we'll look it up and see what it has.
Not using the correct type of gaskets for aluminum intake manifolds can lead to sucking oil also. The standard replacement Fel-Pro's for iron intakes often soon leak when used with aluminum intakes. Gasket doesn't have compression and rebound characteristics to match the higher expansion rate of aluminum . The intake gets hot, expands more, crushes the gasket beyond its rebound limit, and when everything cools back off it doesn't stay tightly sealed.
Any idea what intake gasket got used??