So yesterday morning there was alot of water on the windshield which is normal of course. Went to turn on the wipers and they get stuck up top. Tried to get out the car and pull the wipers up to reset them which worked. Tried to wipe the windows again and then the drivers side wiper pops off the window. Like it moves back and forth but not on the windshield even though the arm is fully straight. It also seems like I can move the the metal pivot that the arm sits on back and forth. How do you disassemble this thing???