On my '03 my throttle is very touchy at low speeds. In 1st and 2nd gear it is tough to accellerate slowly or hold a steady speed. I know that the '03-'04's had a different throttle setup than the later trucks. I have the torque management turned down on my Smarty Jr. Once you get her rolling things are fine but starting out especially without a trailer is tough. Chime in with ideas or experience.