Ben--take the arm off if you haven't already, and reposition it slightly, just a little bit above or below the little white positioning spots in your windshield where the blade should rest. If the blade still continues to only wipe clean half the windshield, then you know the arm is bent. I wouldn't buy a new one. Go to a wrecking yard and score one. Very few people buy them, and almost every wreck I looked at had a pair. While you're there, look over the disassembled 850 interiors and exteriors and familiarize yourself with your car some more. There are always plastic fasteners for holding trim onto the interior that are forever breaking, rubber gromets disappearing, vacuum line elbows, etc. The list is endless of small things you can score at a wrecking yard for somewhere down the road. Dick