FOR THOSE WHO ASKED ME HOW I DID IT! I boiled 1 liter of distilled water, added 2 parts of white vinegar, 1 part of baking soda. Two cups of Coca-Cola, a dishwasher tablet, and half a lemon. Shake it for 3 minutes, place the tank in the solution for 45 minutes, add a little chlorine in the mixture. I then brushed it with a toothbrush and dipped it into the liquid again for 25 more minutes. Place it in the microwave for 3 minutes with muriatic acid, I rinsed it and it looked exactly the same so I installed a new one.
Some one get up to Sunderland and remove the welder and grinder from dilligafs garage...... PLEASE....on behalf of every Triumph ever built