Yes, I have a 32/36 DGAV progressive Weber Carburettor with water choke.

Also yesterday tried to figure why the car dies after running for a few minutes

Would the diaphragm be part of the problem as well?

I'm getting tired of running the sapph with the carburettor and considering changing the fueling system to to a ohc EFI injection manifold system. Can you perhaps share some light on this?