Good Deal!
![YAY! :clap:](./images/smilies/icon_clap.gif)
[space] And we see that Navigator is correct, it is the Carb Sync Cable. [emoji106]
And I see that the Lock Nut for the Adjuster is not tightened to the Adjuster Mounting Arm at all. This doesn't bode well for a well-tuned set of Carbs.
And that your Cable has a slight Bend in it. (just to the Right of the Red Arrow in your First Picture). Since this adjustment is VERY sensitive, I would suggest you straighten out that little bend first.
And you definitely need to perform a Carb Synchronization.