did some research at www.mbklasse.com and this is how they said it is done.

The front smaller cover snaps up and off.

The larger rear portion is held in by four screws. if you look at the four corners of the larger cover piece you'll see the round molded stems in which the screws are screwed in from the bottom.

I am going to use a mirror and verify, plus verify screw head type, in a few weeks.