Eddy carb on our truck too. Throttle cable, kickdown cable and cruise all work smoothly, but the pedal pressure required seems excessive. Had dueling return springs, removed one, not much/any difference other than it needed both as throttle would tend to hang a bit with one spring (both were very soft springs and I bought the truck this way).
I had resigned myself to it just being how the carb operates, but once I get the truck roadworthy again, I will 100% try lubing all the pivot points on the carb!
Thanks for the suggestion!