I just had my 2005 Prius washed in a car wash with the wax included. The windshield was clean at first, but when I put on the wipers, the right hand wiper left a very noticeable mark where it stops and reverses direction right in the driver's area of vision. There is now a white film there. Windex and paper towel did nothing to remove it. Some say Bon Ami is good. The wipers are new -just replaced and the fluid is rain-x. Any ideas of how to remove the marks?