Don't know if this is old news but I used to have quite poor rudder responce in LB2 (using the antenna potentiometer on my TQS as rudder) but I recently discovered that I was able to fix it by tweaking the following lines in CA.INI.
[Joystick]
RMin=-200,
RMax=200,
The default value was -64 for RMin and 64 for RMax but with above values it now feels much much better.
Just sharing this info to our "LB2 knowledge pool"
/KC