I don't own a 124 series, but I think I know what you're talking about. My Volvo did the same thing as it bent around the corners. That distortion is actually part of the glass-making process and from what I understand, the D.O.T. actually allows a certain amount of distortion on windshields. That alone is surprising when you consider that you're looking right through it. On my car it happened on the bottom corners as it wrapped around by the A pillars.