So received new topsflo 24v D.C. Pump from bobby today. Looks great other than the small output port (relative to input) size. I have read a lot about maintaining full port valves and lines etc etc but doesn't everything downstream seem irrelevant when the first orifice is the smallest along the line? I'm no hydrodynamic professional. Can someone enlighten me. I was considering returning some new 3 way valves due to their .47" port size but now I'm not so sure.