A long time ago in a place far far away I was a Chrysler Master Technician. If I am remembering correctly we adjusted the kickdown this way. It's very easy. Get under the vehicle........okay it's not that easy. Back off the adjuster bolt on the kickdown linkage arm on the side of the trans so it slides easily back and forth on the rod. Then take your finger (or thumb or whatever else you got) and push the arm all the way forward (front of the car) as far as it goes letting the rod seek it's own position. Then, simply tighten the bolt down at that position and your done! Hope this helps.
