Hello I recently started having issues with my windshield wipers. The passenger side wiper keeps getting "stuck". The motor seems to be working since you can see the wiper struggle to complete the full cycle. However, the wiper usually stays at its starting point or moves up a bit and seems to get stuck again. Any thoughts on what could be causing this? I'm currently in a cold environment (< 30 F is normal, 20 F is not unusual, lots of ice and snow).