sorry to her that mt wife hates it when she has to pick me up (not near as much as i hate it though
do you think that the sending unit (i think thats the right name unit that screws in to the top of the tank might have a pine hole in it somewhere that is sucking air and fuel? i bent a fuel pump hose barb once i didnt think anything about it but the damn truck wouldn't start changed pump it worked that reminded me of staightening the pump in the beginning, where i bent it cracked and allowed air to pass through
hopefully this will be the problem b/c i think im out of ideas check the fuel line between ele. switch and left tank as well for a small rub or something best luck!!!! 86 gmg