Hi all, newbie here; I just got my set of lionel trains back from my brother. They are about 50 years old and were sitting in boxes for the past 30 years or so. Question: What's the best cleaning solution to use on the track (somewhat rusted) the loco (also caked with age) and other parts? I would like to buy as little as possible new and would rather restore my lionels from my childhood as close to original as possible. Any tips?