Holley fast idle lever types?

1971 Holley r6189a 4150 on a Dodge 413

Main question is: the fast idle lever on my carb was 2-piece and had a spring (here the spring end is off, at right)
[img]https://www.dropbox.com/s/uu7ykt9lnldsk5g/kick.JPG?raw=1[/img]
like
[img]https://www.dropbox.com/s/yt3actqc0bk4zbc/0905st_30_z%2Bholley_carburetor_refurbish%2Bhooked_choke_rod.jpg?raw=1[/img]
So, what is the spring's function?

Will the new, solid extended lever cause any change in the kickdown?

I also had to mod it for the screw to reach the cam
[img]https://www.dropbox.com/s/eicl007pvugat2j/modded%20lever.JPG?raw=1[/img]

I need the TPS for a new trans
[img]https://www.dropbox.com/s/mwwnl2g8yv8h770/TPS%20installed.JPG?raw=1[/img]

So, Holley tech replied that the spring loaded lever is normally for manual choke.
For whatever off reason they put it on the electric choke in 1971.