How do i get replacement drivers from Genesis

Hi, the original 60 and 72 inch ribbon tweeter was a Carver Ribbon. I heard Carver was back in business, but they dont make that ribbon no more. The replacement 60 and 72 inch ribbon was a BG ribbon. But here's my question. Genesis made custom made alluminum woofers, the midbase drivers and those circular ribbon tweeter. What happens if people need to get a replacement woofer or ribbon tweeter. How would you get them.