How does a W2 head oil the rockers/valve train?

What head gaskets do you have?
I ordered Cometics thru 4-seconds flat.
I installed it & ran the engine, no oil to the rockers.
Seems there is a footnote about the W2 gasket.
Mine didn't have the hole provided for the oil galley coming up from the deck.

I drilled a hole for this in my gasket & reassembled it.
No problem oiling now.

The gaskets are identicle with the exception of the oil hole.
I don't know why the offer it without a hole, makes no sense to me.