Hi The glass door on rear hatch of 2000 explorer wont open by pushing button. Want to investigate by removing rear interior door cover. Expected it to be usual push fit studs all round the panel. Tried local levering with large flat screwdriver where panel was attached but just hear a snapping sound when tried first one. How is panel held in place? whats the removal technique? Expecting something small/silly for the rear button problem. Any common faults know here? Thanks in advance.