In my City 2007 Windscreen at night the lights make a long line on my screen. This happens on areas where wipers have damaged the screen.Due to it my visibility is affected. Some body suggested polishing the screen while others say use brake oil on it. Any suggestions? the second problem is that the Steering box is making noises despite twice repairing it. I am told that i have to change it and that it cannot be repaired. Are they right???