Larry, Try Atlanta-Stuttgart Autoparts. They have tons of old MBZ parts etc. The number is 1-800-635-1445. Punch in 1110 for extension and you'll get Dave. Either speak to him or leave voice mail. He's real good about calling back. You may get lucky. That "gasket" sounds more like a spacer which in some applications was used to insulate the carb body from manifold heat. That item could be your problem. Give it a try...
1987 BMW 325
[This message has been edited by jeffsr (edited 04-14-2000).]