My goodness, lots of responses, even from a superhero type, lol!
I so appreciate all your advice. It does look a bit corroded, so the tape sounds like a good idea. That I know how to do. Will be careful not to get in tank.
Ive enlisted the help of someone with bigger muscles, bigger tools, and lots of torque. There comes a time when being a woman means knowing when to wave the white flag....I can, and have in the past not given up so easily......my bulky muscles are feeling all of that 3/8 bar today.....dang it!