On my 70 rowcrop there is a rotary knob that controls the shutters on the radiator. I have an extra mechanism (minus the knob) and I was able to remove the old cable then bead blasted and painted both of them. I am going to use some 3/16 brake line tubing (it comes painted dark green), slip some black polyethylene tubing inside it for a liner, and I ordered some stainless piano wire from McMasterCarr which will slide nicely in the liner and not rust. I intend to attach the tubing to the mechanism with a compression fitting and they just bent the wire to fix it inside the mechanism.

The steel tubing will eliminate the springiness of the old wire wound cable, the liner will reduce the friction and both controls should work much better and easier. Plus using the rotary control on the choke will make it easy to set the choke for starting. Once I know how much choke the motor likes I can make a mark with a Sharpie and from then on a click or two to one side or the other depending on temperature will be the right setting and should eliminate almost all of the guesswork.

I just need to find a knob.

Jim