I got around the issue with the Atlas O signals. I have a wire from the ITAD connected to the Din of the first board then a wire from Dout to Din of the second board then Dout to Din on the third board. I dis-connected the wire from the Dout on the second board connected the wire from Din on the third board along with the wire from Din on the second board to Dout on the first board. So bottom line both data wires from second and third boards are connected to the data out on the first board.
The lights work however the solution is not elegant. They all go green to red at the same time when the ITAD is tripped but the first and last signal go from yellow back to green a lot sooner then the middle signal. The yellow light stays on longer before going green. I don't see any way to vary the timing of the light on the signal nor the board.
Junior is right - I have carpet in the train room. Moving around under the table I am usually dragging my butt on the carpet.
I also moved a DZ-1060s from the position I have the Atlas O signals to another spot. I mention this because ZStuff has a new signal called 1060v (variable timing) and is selling out the 1060s at a heavy discount. I bought 2 more.
I will attempt a video using my phone later this week or over the W/E
