I'm sure I need to add some power to the tracks as I only have one on each loop! It was running the trains fine but when I try to add or do anything with engines in the yard it doesn't see them. Ha ha.
So how many power drops do you guys think I should put on each loop? I was thinking three?
Its the FasTrack switch internals blocking the DCS signal. Gunrunnerjohn suggested to place a 22uF choke across the Aux IN and Gnd terminals to isolate the interference of the DCS signal by the switch control electronics in place of the jumper.
See DCS signal and FasTrack switches. email Grj. I think it's just a capacitor, but I may be wrong.
Your power is fine(and signal, I presume) otherwise, so hold off on the power drops until you resolve the switch\yard stub issue. DCS wiring convention would recommend more.