Holley/Demon Carb stumble

My regulator is set a 9 psi and has a return system back to the tank.
So i could just remove one of the line off of the carb and turn my pump on Right?

Finding me, and making marks on a container might be the problem.
Will have to go out into the garage and find something.
haven't tested my fuel system sence i installed it 3 year ago........It's time to put a check mark on that.

What do you think about the float spring?