I'm looking for some alternative connections for the throttle cable to lever that rotates the butterfly. I want to get rid of the slop in that linkage.
I added a shim from milk carton between the lever and the rotating part with the hole for control rod (it is like an E-Z connector with a cir-clip for securement) It helped but not enough. After some test stand time, 1) the retainer circ clip came off, 2) the set screw vibrated loose (did not have locktite on it)

I have looked (catalog only) at the balls links and the bolt-on swivel links as options.

2-56 bolts are too small for the existing hole. Would you make a bushing out of MarineTex (fill hole in lever and drilled to 2-56 body size?
What are the pros and cons of the options mention above? and please share any other idea / options.