600 edelbrock secondary bog.

IIRC the emulsion tubes, make it so as they only fit one way; but it's been awhile.....
been QUITE a while for me, too. I kinda remember thinking/ deducing how the gaskets had to go to work properly, but couldn't remember if the venturi cluster was idiot-proof or not. No offense to OP, I think we all appreciate he's never even seen this particular carb before.