Installed Gauge glass tubing. Made restriction orifices for bottom leg of GG. Made from 1/4" 3003 tubing x 5/16" long. Squeezed an AN470A (soft) 4-7 rivet in tubing and drilled with #50 drill. GG tubing is 1/4" ID x 3/8" OD Tygon LP-1200 for fuel (ACS PN 05-15262).