While working on my old EATC I had the front panel off. It looks to me that if the bubble buttons are still good and haven't split you could fill them from behind with a clear epoxy fairly easily. This would prevent them from ever cracking. If you already have small cracks they could be painted black from the front after the epoxy has hardened. Paul Nimz '97 TR SHO '93 EG mtx SHO