Regarding JD's successful use of Evaporust, which I had never heard of before, It occurred to me it might be useful to remove rust from tubular track and especially track pins.
I did a search and saw that this subject has been discussed on this Forum before. Rusty track pins will cause voltage drops, so I do my best to replace them, but being a pack rat I usually save the rusty pins if they are not too far gone.
I plan on getting Evaporust and try it out on my rusty pins and track. Will do a Google search to find out where to buy it.
I am hoping that the Big E has stuff like Evaporust, bright boys, smoke pellets, bayonette bulbs, spray glue, O Scale trees in large volume, scenery materials, and other stuff that train nuts like me need periodically. LOL, Arnold