I pulled the windshield and rear window out of my '68 Mustang getting it prepped to go to the body shop. Both windows are in good shape, no cracks or chips. But the lower driver side corner on the windshield has a little discoloration and two small bubbles between the two panes. Does anyone know whether or not anything can be done to fix that? It's not very noticeable when the window is installed, but I would hate for the bubbles to spread up into view.