Here is the linkage from my original 6090s TQ from a "72" 400 that was on my "68" Formula S 383 that ran flawlessly hot or cold. Looks like you have a hodgepodge carb, so who knows what you have other than a 6090s base. What is the top casting number? Do you have a secondary adjusting tool? Have you checked jet and rod numbers? I'd ditch that banjo fuel inlet also, and get a 5/16 brake line and run it straight in. As I remember, secondary angles were different between auto and manual carbs. Do you have an adjustment sheet for the TQ? Take the time to make all the adjustments called for including the air valve gap dimension between the air horn and the secondary air valve. Pictures 4 and 5.