I have a 2001 crown victoria and there is problm with the driver wiper not touching the class at all in the middle? How can this be fixed. Moter and arms have been replaced.

Swap the two arms because one may reach further and longer then the other one which sits on the windshield at a different angle for a different range. They may look identical but one goes over the middle of the glass from the down position and the other goes to the side of the curved windshield from the down position. It is how they end up or where each one ends up on the curved glass that you may have backwards. Try it and let us know what happened!