I can't visualize a fix for your issue. I can tell you that I always throw in the towel when I have issues with the bell cranks. This is the solution that works. Expensive and worth every penny.
BPE TorqueFlite Kickdown Cable Kit - Bouchillon Performance Engineering BPE TorqueFlite Kickdown Cable Kit - Bouchillon Performance Engineering
BPE TorqueFlite Kickdown Cable Kit - Bouchillon Performance Engineering BPE TorqueFlite Kickdown Cable Kit - Bouchillon Performance Engineering