Any other tweaks for Wilson Audio Duettes?

I have the Wilson Audio Duettes- series one. They have always been on their associated stands and usually placed at least 3 to 5 feet into the room. I have had good experience placing the tweeter on the bottom (upside down), and have had good results replacing the supplied umbilical speaker wire with at first, very pure copper, and later very pure silver speaker wire. Has anyone else done the same? What are your experiences? I have paired them with good solid state amplifiers and also good tube integrateds. Both had improved results with the above. My listening chair sits low so that may make a difference. I have had these primarily in a small room in a near field environment. My ears are about 8 feet from the speakers. Thanks for any further suggestions.