kickdown linkage

I'm having problems getting the kickdown in the right place. In order for the tranny to build pressure before shifting the rod is so long I can't get full throttle. It does work when floored (adjusted to get full throttle), but shifts very early at low throttle. I'm using a holley spread bore carb on the 360 Q-jet manifold. Any ideas?
Thanks and God Bless Bruce
Lone Star shootout was partially rained out but still lots of cool mopars.