PickyPerkins
You may be intermingling two separate causes of Fuel restriction or Flow reduction. Your reference to dissolved air or air (Gas) in the Lines reducing pump efficiency sounds a whole lot like "vapor Lock" (or Block). It is a serious problem in pressurised Fuel systems, but one wonders of its relevance here. Also, a "foaming" supply of Fuel would mimic starvation, even if Flow continued. Cavitation, having been demonstrated, has stolen all the attention, and is an unrelated (presumably) failure, unconnected to dissolved gases in Fuel (to my understanding).
Airfoil