Air brakes stuck on all aircraft

Whenever I load an aircraft the left air brakes are permanently up.
Checked the joystick assignments, removed them, and left the default / and still it doesn't stop the air brakes being on?
Anybody got any ideas?
Thanks
Checked the joystick assignments, removed them, and left the default / and still it doesn't stop the air brakes being on?
Anybody got any ideas?
Thanks