@Arnold D. Cribari posted:
Early this morning I noticed 2 more lock-ons with no wires running to the ground clip, so I added drop wires from the ground clip ….
Continuity was further improved….
Arnold sounds like your track pin connections have loosened up or has built up resistance internally to the track rails over the many years on your layout. You may want to also check that the existing lock-ons are making good, tight and clean connection to the track rails. Removal of the lock-on and cleaning the outside rail connection points is straightforward. You can also check the wire tightness under the holder clip. Additional lock-ons are certainly the easier and effective workaround for the pin issue.