Holley/Demon Carb stumble

As long as the air bleeds were the same front and rear, and you had the metering blocks correct for the front/rear(as the carb was installed on the motor), with that carb...... I don’t see how it would matter.
You said the baseplate has the hole on the secondary side to provide vacuum to the PV cavity....... but does the secondary side of the main body also have the hole?
What series of carb is that?
Mighty Demon?