Clifton, hi, your problem is not the track, although another feed, won’t do any harm. It’s about Grunt. 3 rail locos, need more power than modern ones, to start up. I don’t think your Gaugemaster gives enough. Perfect controller, for most things, but, not hungry 3 rail ones. I run all my 3 rail using Hamment and Morgan Duette, or Clipper. Easily obtainable on eBay. They have ample power for your needs. Buy off eBay, and worth having checked by electrician. I have 9 of these, and can guarantee, your locos will run well. As for adding more supply, you can simply buy another power rail from eBay. Duette, is a Double controller, so you would not need one, to power both locos. Best track cleaner, is small piece of Hardboard. Use rough side, or nip in the kitchen and borrow a rectangular green pot scourer, the plastic ones, Not metal .