I've had an old pioneer deck (single cd, no mp3, nothing fancy) probably since about 2006 in my car (y11 wingroad). When I carried it to the audio guys to change the deck to a newer one (pioneer mp3, bluetooth, aux, the works!) they tell me that I have to remove the multilocking system I've got in order for them to access the deck. I have one of those U-shaped multi-locking systems. Has anyone any advice on being able to change deck, without having to go back to the multilock dealer to have the entire system removed?