Untouched spots on windshield
It seems that the arc of the blade lifts up in the center as it gets about half way through its sweep. I should mention that this happens when the car is stopped or moving.
I can't think of what it could be. There are no obstructions and the wiper arm has never been bent or stressed to my knowledge (I've had the car since new).
The only thing I can think of is that the spring that tensions the arm has gotten weak...but that seems a little far-fetched to me. I just want to be able to see without that dry, dirty untouched area just to the left of my field of vision.
Has anyone else had this problem? Maybe I just need to go back to flat blades.




Try tightening the driver's side arm. 13mm hex socket. And yeah, bending the blades should help too.



