I live in Ohio and we've been dealing with a lot of snow this winter. I've had my ST for almost 3 months and my driver side wiper hasn't been working 100% since a few days ago. I'm guessing it's from all the snow and rock salt. It seems like it's not touching down to the windshield all the way, it doesn't wipe all the snow/rain off. Has anyone else had any experience with this before? There's not ice on the wiper blade. Should I replace the wiper blade or could it be something with the arm?