yes. AFAICT the issue is that negative G pushes the fuel to the top, and the float then floats *underneath* it in the sort of position that allows the float valve to open fully.
The orifice is deigned to limit the amount of fuel that can actually flow in, to more or less the peak expected flow on full throttle. So it won't do the real job (Inverted flight) , but it prevents MASSIVE flooding when the stick gets pushed forward. Things just get a little rich instead