Has anyone had problems getting the furl pump assembly to reseal after changing out the fuel pump? We replaced the large O-ring, and closed the tank back up. We siliconed over the bolts and edges, but you can see where gas is lifting the silicon. I don't know if its fumes or what not, but we cant get it to seal back. The car has a slight gas odor, until i start to slosh the tank around a bit driving. It then gets stronger. Any ideas?