edteach
Hello and Welcome to the Forum!
You have a nice, Postwar set. With the locomotive, cars, transformers, track and accessories, you did all right.
65+ years old and still running well, if you take care of it, I can easily see it running for another 65+ years.
You might want to consider picking up some wider curves, appear to be 027 in the video, so you can let her strech her legs without flying off the curve..

                                                !!!PLEASE!!!
                    DO NOT USE STEEL WOOL ANY WHERE NEAR YOUR TRAIN & TRACK
Remember that experiment in physical science in grade school where they put metal filings on a sheet of glass and moved them around with a magnet?
Steel wool leaves fragments on the track when you use it, the locomotive, think big magnet, picks them up as it goes round. eventually shorts out the motor.
IF you must use anything, A green 3M scrub pad, heavy aluminum foil(the stuff they use for pans) alcohol on a rag or a track eraser to clean your track, never steel wool.