Lot's of rivets in a small area. I made a critical decision today. I decided to not prime any aluminum. I did buy a few spray cans of green zinc chromate from Sky Geek. I will use that to spray interface pieces. I probably should have sprayed the tail tie-down brace before riveting it in, however, I do intend to spray it before it completeing the tail section. And then, I will Corrosion-X the airplane every few years and I suspect it will be just as pristine 50 years from now as my '61 Debonair was internally.