Help mounting Oil Filter Plate!!!

From what I found is there is two different gasket types that come in the full gasket set.Depending the engine you have.I have a 340 and tried the one piece gasket with the three "connecting" strips from the inner to the outer seals.This one would not tighten up enough to stop leaking,very bad leak at that while on the stand and spinning the pump by hand.There is a small round gasket and a large gasket in the set that fit my stock setup.If my memory servers me right the one piece is a magnum gasket and the two is for an LA engine.
BTW I don't recomind using any RTV on that part as it can smash into the filter and possibly clog it or a small enough piece make its way to your bearings which is not a good thing.