Thanks for your quick reply to my query. Yes, I do believe that the outside housing is still in the door. Question is, how do I remove the outside housing from the door? Must I take the door apart to get to it? You advice is indeed appreciated.
Yes, you will have to remove the bottom rail on the glass door. Be very careful you do not damage the glass. Normally there is a screw in each corner that hold the frame together. Use a block of wood to tap off the bottom.