Steer by wire / force feedback - movement speed high

Hi… tried to implement a simple force feedback controller.
therefore i took the steer by wire haptics example and modified it.

Changed the motor move command to this principal example:

motor.move( force * ( center - motor1.shaft_angle));

Full source here:

Movement of the motor to its center position is always very fast. How can i slow it down without loosing the force on the axis?