That is awful. Considering the cat has 9 lives, you'll probably run out of money before the problem is truly solved. But seriously, clean it up, disclose the damage and sell it to a electronic tinkerer as a project. Use the proceeds to offset a replacement.
Although I'm not an ARC guy, I believe that most manufacturers of high end gear have improved the components they use over the last 10 years. You might find better sound at a lower price point in the ARC product line.