if you have an OEM windshield, the proper way to realign the wipers is to position the blades where it will line up next to the dots on the glass... then put the nuts on and tighten them... afterwards, test to make sure you got it right by turning on the wipers and then turning them off... you may have noticed that they are not lined up perfectly... don't panic yet, lift each of the wipers off the windshield slightly and set them back down gently, if they are lined up afterwards, then you have got it done right.... the reason why this happens is because the rubber on the wipers puts tension on the whole wiper system so it keeps it from going to where it's supposed to