Lokar kickdown help

Hi, just got my lokar kickdown cable. I can get full throttle when I step on the gas, but when I attach the cable, I cant get full throttle/kickdown lever rotation. Seems like the kickdown spring is too stiff adding to the throttle spring. I feel like taking a hammer to this *****. Any ideas? Which hammer should I use. Seriously, anyone have any help? Thanks, Russ.