I am trying to source one of the above. It is for a standard Smiths
6-hole top-mounted sender. Whoever made the tank didn't follow the drawings, and the sender float can only operate in half the available space. I need a Tom and Jerry cartoon finger that descends from the sky and pulls the hole into the correct position. Failing that, it needs a new hole, with mounting ring, in the right place. I believe that removing and re-using the old one would be impractical. Searches all produce the sender and sometimes the cork gasket, but I can't find the mounting ring.
Any ideas?