Have been giving me the shits lately. whenever they go down to horizontal they go to far (past the window seal and onto the plastic below) and makes a thud. considering its been raining heavily everyday i can't stand putting them on highest speed as the thuds are louder and more frequent!

Just wondering if this is a matter of tightening something or is it worth getting new ones as all they do is smudge the water over my windscreen anyway....