If there's a kink in the end of the push-pull wire at the carburetor end caused by clamping the setscrew down on it, it's likely that the wire won't slide in and out smoothly. Either carefully straighten out the kink, or cut the wire back a bit to eliminate the kinked spot.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!