1993 Sentra - How To Remove/Install Front Corner Light
 

I have moisture inside my driver's side, front corner light assembly and want to replace it. Looks like this. I have removed the upper screw and can definitely get some motion in the unit but cannot get it to come completely loose. It seems like it might be binding on the lower inside edge near the headlight. How do I get this loose? Seems like it should be easy but I am a newbie and stumped.

Thanks