Some updates. Over the last two days I've building sveral protoypes of the throttle cable linkage. The first ones were either not the right size or too weak. I think my last version is pretty darn close. I fabricated it using some of the Kirkham push rod components that came with the car and a bunch of metal I have here. After a lot of cutting, welding, drilling, and mock ups, the linkange works.
It is not the prettiest right now but I'm working on the fine tuning before I take it apart and make it look nice. The pedal action is fairly smooth, although I wouldn'd mind being a little smoother. I'll be focusing on that today.
Here are some pics and a short video.
Throttle cable system - YouTube