Just bought a 2015 Civic EXl. In upper left corner of windshield there is a 4" by 4" area where it seems that a sticker was removed which, in turn scratched the glass. At first I thought it was stickum, so I applied alcohol, Goo gone and just window cleaner, with no results. Then applied scratch removal compound (oxide) several times with very minor results. Anyone have solution for me, short of replacing the windshield?