I have a new 2-8-0 outside frame and find the pilot truck tends to catch on something, (screw heads that are located there, I think), and derail the engine on 22" and 18" radius curves, (EZ Track).    Also the headlight is not working.  It might be the connection between the tender and loco as I don't read any voltage at the headlight leads when it is "on".   Is there an diagram of the connector pinouts anywhere?

  Thanks!

    ....Bob