+1 to that.Any chance you can clear that carriage lamp? It seems to be blocking 20% of the viewable area.
Due to WAF concerns that won't allow moving the lamp, could you try slipping a piece of sheet metal painted flat black down the inside of the housing (mine has 2 bolt caps on top) on the cam side of that carriage lamp just to see how your night view looks? It won't increase viewing area but it should help with glare at night when lamp is on.