Changing the rear lights to edition 30 ones. Got three done but the last one (inner on the drivers side) is not finger tight and the person who had the car before has worn the plastic so it's pretty much round, I can't get any purchase with the spanner. Tried to get pliers in but it's in such an awkward place I can't get them in. Its seriously doing my head in, I'm so wound up as I've changed three and can't change this one! Has anyone got any bright ideas for me?