At a product knowledge meeting once I was shown a cut-a-way of a Tru-Flate "T" style coupler. The coupler was designed to pass more air than the other types of couplers. I don't remember the details of the internals, but switched all my couplers to 3/8" Tru-Flate (Plews) "T" style couplers. No air starvation here