Kickdown linkage

Is there a proper way to adjust the kickdown linkage???? I installed a highrise aluminum intake and 4bbl carb on my 72 Satellite, 318cid, 904 trans. The kickdown is controlled by a rod with a slotted end attached to the linkage that I had to reshape to compensate for the taller intake. I just cant seem to get my shift points back to normal. Also dont remember was there a spring to hold that kickdown linkage forward when the throttle is closed????????
Author: 72sat