Holley/Demon Carb stumble

Well.....That was a vary interesting test.
Put two ball valves in so i could use one to set the pressure and the other to block flow while i changed containers

So set pressure at 6 psi with top valve, closed bottom valve put in to my 6 gal plastic race gas can.
Opened valve and started the timer. I was using my smartphone that had a lap counter so i ran 4 gal into the tank hitting the lap counter each gal of gas.
54,52,54 and 51 seconds. So that's real good!!!!!! poured it back into my car and did my 2nt test.

Well if you adj the ball valve to 9 psi.....you get no fuel, because the regulator is sending it all back to the tank.
so i adj the ball valve to 8 Psi and did a one gal test.

1 minute and 55 seconds. Regulator was slipping some gas back into the return so no apples to apples comparison there.
still I'm putting a check mark in that column!!!