Adjust it so that the kickdown lever starts moving as soon as the throttle is applied and be sure it is all the way back at WOT. When you get it running take it for a ride and see if the tranny shifts as it should. Under light throttle my 727 is in 3rd by like 30mph.

If your shift points are not right make small adjustments at a time to the cable until you get them where you need them. Worked for me. I have the same cable on my car.