interesting.
Based on comments received I set up two short tracks and all works fine. so that leaves me to believe I'm back feeding. So my next and question is the tracks are center rail separated but not outside rail. should I cut the gar graves pin out of the switch (Ross and Gargraves switches)? or should I go a foot away on the branch lines (TIU variable 1&2) and isolate all three rails?
I appreciate all your great ideas and suggestions.