Requesting to see pictures of exactly how the throttle cable connects to the throttle linkage (linkage from the gas pedal). Looking at the diagram from the assembly manual Attached - see highlighted area in View A), it appears that the Throttle Rod itself passes through the throttle linkage (gas pedal) and there is a sleeve or guide, if you will, that is passes through just below the gas pedal linkage and then it is secured with a set screw.
This for a single barrel Rochester B1 carburetor on a 1958 straight 6 235-cu.in. engine.
I have attached Sheet 23.00 from Section 6 of the assembly and two photographs of my carburetor with one of the photographs pointing out the area of interest.