Thanks for the info. I called Zip Dee on the stove vent replacement...they don't have them anymore (strange) but our Pal in Calif. does. OUCH again!! Now I will have a Gold Plated vent to match the Gold Plated black water tank from last week....but at least they had the items.
The new Worthingtons showed up and are new aluminum...just right to start polishing on. As an experiment I used Met-all on one and Nuvite on the other. It was new aluminum after all. No difference in the shine but the Nuvite did go a bit faster and the clean up was easier. I use cornstarch on a rag to get the black residue off. The tanks showed up with lots of small stretch marks and surface marring. The Met-all does not "move metal" so those imperfections remained. I used F7 as a try and the marks are gone.
The tanks are unwieldy and need support during the polish out. I filled an old feed bag (some of you will remember those) with sand and used that as a base support for the polish out. That worked perfectly because I could now lay the tank on its side and apply pressure during the compounding with F7.
All in all.......I'd rather have been fishing.
I really want to go to Birmingham and see Clapton....