I want to thank all of you for the help on the AF. It still sits on the shelf. As I have many other projects. I could probably rebuild the reversing unit but I really do not know what it needs or adjustments if any. I do have a couple of questions. First anybody know model number (road number) and possibly approx year. Pictures are above. Tender Just for info, looks new. many times I have looked on this forum and have received much needed help. Thank you again Roy O Forgot question 2 anybody interested in rebuilding reverse unit for me if I remove it? Just E mail me. Many discussions of who was the first with E unit AF or Lionel. I have heard Lionel filed a lawsuit against AF and some of the cause for its failure?