There are a couple of ways to approach this. One: it looks like you have a factory kick-down set up. Find yourself a factory service manual and adjust the linkage properly. But the linkage on the transmisson, and the carb need to have the proper throw ratio to be able to work together. If you have a lever on the transmission from a van, and the one from your a-body on the carb for example the throw ratio will not be correct, and getting it to work can be a real challenge. Or option two:Call Bouchillion Performance and order their kick-down kit and fix the problem for good.