hi, i have an a4 04 plate 3.0ltr cabriolet and in the boot you have to pull the lever across to lower the roof down. it also drops down a flap in the boot aswell where the roof box lowers does anyone know if this flap has to be on or can it be removed and would the box still lower if it is removed any help would be grateful as i am trying to do a install in my boot but the flap gets in the way.