got kick down linkage hooked up---but help

Your problem is where you have the kickdown connected. It needs to be much higher. You've got it mounted below the center of the throttle shaft. It needs to be above it so it will push back on it. When it's mounted lower that the throttle shaft it will allways pull on it no matter what you do. On stock linkage it is mounted off the same stud as the accellerator cable. Uses a special long stud to do this.