rear parcel tray blind

[Curtis]

my rear blind has been ticking when putting it down since i bought the car. today i decided to get it out and check why because no one one the net know why it does it. Once i removed it and stripped it down i found the gearbox part attached to the motor has a gear with a spring on it which goes under load when putting the blind down,this gear is missing a few teeth which have been messed up anyone know where i can get a replacement gearbox or motor with gearbox