Holley/Demon Carb stumble

Ok no retest.
I don't have a cap to plug the secondary feed to the carb and i don't have a Y to tie them both together. and i'm not pushing 12 psi to my needle and seat. IF it was a rubber hose i would be way tempted to pinch of the secondary line with vice grips, but it is a braided hose.
I get this..VVVVVVVVVVVVVVVV

You’re not understanding what I’m saying.
Let’s say you turn up the regulator to 15psi, and retest with the valve to set to maintain 9psi, and it still takes 115 seconds to pump a gallon.

Then, in operation ....... you set the pressure to 9psi....... and the pressure drops as soon as the motor starts making over about 375hp...... and the floats drop.

But if i have enough "fuel flow" to support close to 600 HP at 6 PSI.(One gal in 53 seconds) Do you really think i'm losing that much more flow at 9 PSI?

"For a 500hp motor it should take less than 85 seconds."
550hp - 78 seconds
600hp - 72 seconds