That is not an original equipment choke. The carburetor you have is intended to have a divorced choke, and it appears that the manifold you're using is not compatible with the carb. You're kind of on your own trying to make that Rube Goldberg rig work.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!