It seems to only do it every time it gets to just under half a tank. It's still doing it. I open it all up last nite and everything seems to b exactly how the stock pump was but there was just under half in the side with the pump and the other side of the tank there was about half so I'm wondering if it's not transferring into the drivers side of the tank for some reason..maybe the jet pump any other ideas? It's not the sock..