Why not get an adhesive rubber foot type thing and stick it between the 2 slots. Then you can feel your way in.
http://www.westfloridacomponents.co...esive+Rubber+Feet+Bumpers+12.7mm+X+5.8mm.html
something like that
http://www.westfloridacomponents.co...esive+Rubber+Feet+Bumpers+12.7mm+X+5.8mm.html
something like that