I have a 1949 farmall cub that I am having the toughest time getting any sort of throttle variance at the throttle control. I have adjusted the linkage, the carburetor Idle screw and the governor adjustments. I'm not looking to have a hot rod or anything but I do want to figure out how to have some control over the throttle. Does anybody have any tips or tricks on how to get a little bit better throttle control?