Set you travels back to 100% Servo linkage on th innermost hole of the arm. Carb end on the outer most hole in the throttle arm. Before doing that, set both the servo and the carb lever at mid point. So the carb will be 1/2 open and the servo arm will be in the middle of the travel. The distance between the two will be the lenght of the linkage. Work with that and you'll be as close mechanically as you can get unless you have an extremely long carb lever arm. Those make things even better. Adjust travels at the transmitter after the linkage is at the right length. After that comes any curve adjustments.