It's already loose and smooth.
The clip on the end of the cable end at the carb even falls slightly down at closed throttle.
I just went out and moved the return spring to the bottom of the disc as a first experiment, so now the spring pulls back on the bottom of that disc instead of forward at the top.
We'll see what that changed and go from there.
Using that disk instead of a one arm linkage gives a lot more options and makes changes quick and easy. :D
That's why I designed and built it that way.