I have tracked down a slow weep at the base of the fuel tank where part AD-43H is riveted to base of tank. Is there a topical application that will seal this troublesome area without having to remove the tank? Will a generous application of tank sealant work if the tank is emptied and the area cleaned? Otherwise it appears it will require tank removal, and re-sealing and riveting AD-43H to base of tank again. Or is tank replacement the final answer?? I appreciate any thoughts or experience in dealing with this. Thanks.