Only thing that has come to mind is that I haven't check the matting surfaces for straitness. I think it has to do with the fuel heading to the front of the bowl and to the right that causes the engine to kill. So maybe the gasket is not sealing on those sides.

Antique junkie...current cars owned: 1928 Ford model A, 1958 Chevy Delray sedan, 1966 C10 stepside, and 1976 Chevy Corvette Stingray!