I was running my SW 8 yesterday for a while and was having an issue with it loosing DCS signal. At first I thought it was something with the engine, but soon found the cause. I have just a remote commander, no TIU for this layout, and it would stop functioning. Checking the wiring I realized that it was connected to the "B" handle for the upper level. My KW bleeds voltage through if the handle is not fully in the off position so the RC would get enough power to function occasionally. Don't know why I hadn't noticed this before but since most of the switching is done on the main level I moved the wires to the other track buss. Problem solved!
Bob