Holley/Demon Carb stumble

I was referring the hole drilled from the bottom of the main body into the PV cavity.
Does that main body have that hole drilled into both primary and secondary PV cavities?
To operate the PV, the hole has to be in the baseplate....... and the main body.

Hard to really tell from your pic, but it sorta looks like one end is drilled thru...... and the other end isn’t.

Those holes need to be drilled thru into the PV cavity to allow the PV to operate.