I am about to go crazy!! I have replaced my fuel pick up tube, gasket and all new hardware (Toyota Parts). I can not stop it from leaking. Of course it only leaks when the tank is filled with 15 gallons and up. I have pulled the tank 3 times checking the gasket, rim around the tank and can not fine a obvious leak. Has anyone experienced anything like this before? What am I missing?? I have replaced all my rubber lines from engine bay back. Any help would be great or advice. Thanks from a frustrated 60 owner.