Carburetor linkage Questions for 67 Dart

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Drawing from '69 Service manual
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www.mymopar.com
You can download a '67 Service Manual

Also more explanation in the Master Tech Series. Available as pdf from the same website
1971 Transmission linkage adjustment supercedes the earlier ones.
Master Technician Service Conference - Chrysler's Training for Mechanics

But yes the basic concept is the 'kickdown' should be a forward at slow idle, begin to move as soon as the throttle opens, and is nearly all the way back at full throttle but certainly not preventing full throttle.