Thanks to all for their input so far. First, I have a 12 gauge extension cord that goes direct to a 20 amp circuit and has an embedded 3 way 3 prong splitter on the end. I have both the legacy base and booster plugged into the splitter. Each has a small on off switch between their plug and the extension cord as there is no switch on the cord and the circuit plug is well under the layout with no master turnoff (mistake on my part). I have my master ground wire in the wiring run of the power runs with the common on the the other side of the layout. The master ground is connected to the ground receptacle of the of booster. Please LMK if there is a better connection point. That being said, I do have an actual earth ground in the room that goes into the house master ground if connecting to that might be a better solution. I was told by someone that it had to be part of the actual electrical ground but I am unsure if that is correct. Please enlighten me on that.
The areas with the problems have several parallel tracks on the lower level where the problem is as well as on the upper level. My ground plan shield is run under the upper level on the bottom of the plywood and above the lower level. Now the copper ground wire is run roughly in the middle which means there are 2-3 tracks on each side of the ground wire. Not sure I need to run additional ground wires either between the upper or lower tracks or a parallel run directly over the problem areas which are on curves. LMK.
I will look for my ohm meter and see if I can detect any ground on the tracks themselves.
Thanks for everyone's help.
