360 oil pan gaskets….One piece, 4 piece??

My memory is foggy. What I THOUGHT those magnum gaskets did, when used with an LA pan/ timing cover, was left a gap in the cutout near the pan rails that had to be stuffed with silicone.

EDIT. Now I remember. Look at the right side of the photo, the front of the pan. See the "steps" at the cutout where it meets the pan rail? That is an LA pan and the Magnum gasket will not seal there--without silicone