I was changing my wiper blade rubbers today and noticed something strange. I have been using the silicone ones, but decided i wanted to put the stock ones back on b/c the silicone ones were fading and looked ugly. anyway, i search in my basement for the old blades to change the rubber and noticed that the driver's side one is shaped almost straight. It actually seems to be concave! the passenger side looks regular arch shape. the driver's side looks weird, when i press on it to simlulate the glass shape it seems that the middle part does not arch in, it is just flat. i am afraid to put it back on because i don't want to damage my windshield.

 

i will post a picture later tonight....