Quit listening to whoever told you that.
It may very well be the carb, but it isn't surging because it's a two barrel.
Tie your choke closed about 1/3 of the way and see if the surge is gone.
If it goes away you very likely have a dirty carb, and adjusting it isn't going to fix anything.
You can't adjust stuff like this out.:D
There is also a clue for you in the first pic, as things like that ball can get lost without a person ever knowing it was there.