Yes the original photo (post #1) linkage uses a spring from the kickdown slot to the bracket at front. I think that it functions (using that term loosely) as a kickdown return and throttle return. This means that the function of the slot in the kickdown is completely negated (keeps the kickdown linkage from holding the throttle open -YIKES). I hope the OP will share the spring arrangement in post#10 with that car's owner...
