First, I was wondering what is the best way to weather the sides of the rails. Second, best method to dirty the ballast to look used or aged. Third, here is a whopper! I travel in Northern NJ by train everyday of the work week, during the winter, the switches are heated to keep the moving parts from freezing and either getting stuck or slow moving. I was wondering if anyone had tried to come up with the addition of LEDs to mimmick the gas flames being used to heat the moving parts of the switch.