Sensitivity nightmares

OK thanks. Here is what MSFS assigned my Joystick.

JOYSTICK L-AXIS X -Aileron
JOYSTICK L-AXIS Y - Elevator
JOYSTICK L-AXIS Z - Throttle
JOYSTICK R-AXIS X -Nothing
JOYSTICK R-AXIS Y - Nothing
JOYSTICK R-AXIS Z - Rudder
JOYSTICK SLIDER X - Nothing
JOYSTICK SLIDER Y - Nothing

Those that are not used must I Reset them to the default settings?