Im constantly having to put air in all of my tires. I called a local wheel refinisher and he suggested sand blasting the beads and priming them, claims they will be good as new.
Anyone else having this problem? suggestion?

I did.
In my case I just needed a better tire store that actually cleaned the rims first. No problems since having them remounted.

Tires on the 89 wouldn't hold pressure for a week. I sandblasted & painted the rims. Haven’t had problems since.