Here is the simple solution to your problem. use the new ZDZ carborator arms with the ball link attached to a nyrod. This is the easiest way to hook it up. The red nyrod runs even to the firewall and then the yellow inner rod comes out. All you have to do is use a 4/40 threaded stud from sullivan and thread in in the ball link and then in the yellow nyrod.
If you have a 4-40 tap you can start the treading process in the yellow rod with that. The link will show you the two size arms. the small is for the choke and the larger one for the trottle.

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