kickdown rod dilemma - throttle not opening fully SOLVED !!!

I read a very simplified explanation of those "fulcrum points", etc... someplace. If I understood correctly, the length of the levers on the carburetor and on the kickdown lever on the transmission need to be identical on Mopars. Distance from the shaft it is turning to where the rod attaches must be equal on both levers. There are a bunch of different transmission levers available.