fuel return line

Allrigt...I'll run with this thought
The regulator I have now has two outlet, but one is closed of
If I were to use that port, and run both a return line and a restriction in it...would the gauge on the carb still be accurate?
It should, right?

And would that turn my deadhead regulator into a return style one?
And...would the adjuster on the still be functional, perhaps for fine tuning?

That's the same idea as using a filter with a vapor return nipple on it near the carb. It may be better to T-off the line closer to the carb with a restrictor of course instead on going off the regulator. The pressure regulator regulates the pressure in the whole system, so if it doesn't matter where it's at. The adjuster would still be functional.