No oil in pass. head?

Fired up the new motor yesterday for the first time.

Fired on the first crank! But it got kinda noisy so I shut it off.

This morning, I pulled the valve covers and it looks like the passenger side head isn't getting any oil past the rear two rockers. Save for the rear rockers, everything is bone dry.

I'm pretty sure the driver side head is getting oil, but not positive since that's the side with the fill-port.

Before firing I pulled the plugs and primed the oil pump with the starter.

Any thoughts on where to go from here?

('72 dat sedan freshly rebuilt 318, 727)