When I took over my M3W the tip of the ignition key had broken off inside the barrel of the lock. This isn't a problem when using the damaged key but I'm concerned that a) I might loose or damage that key (so would have to cut a bit off the spare) or b) the broken off tip may move and jam the lock mechanism. Does anyone have any suggestions as to how I might 'rescue' the tip, alternatively has anyone had cause to remove the barrel of the lock as necessary to either shake out the piece(s) or fit a replacement? Comments and suggestions welcome!