had to get a new windshield and when they put the windshield arms back on they are in the wrong place. took the 4 screws out of the plastic cover but now how do I get the cover off.

 

No need to take off the cover. At the base of the wiper arms there is a cap (blends in real nice and so you don't notice) that pries off and then remove the nut (15mm) that holds the wiper arm and then you can pull the wiper arm off and reposition it.