So I did something stupid and backed out and just clipped the edge of my passenger side mirror. Thankfully it was only the flat black housing which was broken on the mirror and the heating/power/camera were all still intact, so I ordered the housing only online. It's a fairly straightforward process to get the mirror taken off, the cap off, and the rear piece of the housing undone, but the front piece must taken off after the white piece (actuator? from the power mirror) seen here. I know to remove the two clips at the top and left of the piece, but it seems to be anchored at the center which I can't see. I can't find any specifics online, and I don't want to break it by forcing it off. How does this white piece come off??? Help!