Kickdown diagram needed

I finnished my v8 swap in my 64 valiant wagon about a month ago and I'm Still having trouble with the transmission functions.The engine is a 360 magnum with eq heads and a ld340 intake with a 650 eddie carb.Transmission is a stock 904 pushbutton with a deep sump pan.I bought the kickdown linkage from a friend that crashed his 66 barracuda (273 2bbl)a few years back and hooked it up to the best of my knowlage.I did get the carb adapter for the kickdown to hook up too but I can't get this thing to kick down from third to second.If I adjust the upper rod to push more on the lever the carb won't open all the way.It will sometimes kickdown when I do that.If someone has a picture and maybe some advise that would be great.