Hi I'm having some strange behavior from my wipers. We had some snow and my windscreen was covered with it, I went to start the car and didnt realize the auto wipers were on. The wipers tried but couldnt move and I quickly turned off the wipers when I realized. Now, when I hit down on the wipers, they do not complete a full cycle, they simple stop wherever I let go. Intermittent/automatic wipers do not work either, only fast. to be clear, this is not the issue of a stripped or slipped motor shaft, where the wipers "park" in the wrong spot. In my case, the wipers stop wherever I let go of the wiper switch. What should I look for?