What I'm wondering about is some of these setups have a return spring attached to the kickdown and some don't. If I understand the system correctly, as the throttle lever moves rearward, the bottom, attached to the cable, moves forward, which pulls the kickdown lever rearward, then when the throttle lever moves forward the cable is pushed back, which then pushes the kickdown lever back into place. I can see where a spring would assist to make sure the kickdown disengages, but that seems like it would also be pulling against the throttle lever, making the pedal harder.