You should be able to reach the other end of values, also using the DXTeak programe. Observe the RAW values at the problematic end and calibrate the black scale to the same value. Changing the pot its not difficult, but finding the spare part is. Besides, the range of the pot should be about 30º and "normal" pots have 270º, so even if you use the correct resistance value, you wont get 100% use in only 30º travel angle. You can allways disconnect pot, extend wires to outside, make a ruder pedall and connect the 3 wires from joystick. In this option, the best way is to use magnetick hall efect sensors, sensivity 5.0
If you need more info, i can tell you were to buy them in Portugal. Currently i am builting a throttle quadrant to the game: 2 pots and 2 hall sensors, with game pad electronic board.
Happy new year!
