Now in deep with Super Six conversion KICKDOWN woes

Thanks for all the ideas. Allen screw was great idea, however after going to Oreilly and Home Depot and neither having a 5/16 Allen screw, i gave up. I tried bending a few times, all of it was no fun. So took it to a tranny shop, gave him an extra kickdown bar, and asked him to try to get it working.
I did search around for the Cable ideas, seems like $150 for the kit. But had a hard time finding any pictures of the complete installation. What I cant do is remove that little pincher mounted on the kickdown peg on the tranny. Maybe I can sell all the olds parts, manifold, holley, rod, pedal etc... and break even? When driving it to the shop, I did notice much louder and a little stronger AND NO HESITATION. horayy