I have gone with 3 rail for my Prewar OO layout, and would like to swap this 2 rail set for a second 3 rail Hudson to ease wear and tear on my lone engine I can run.  Set is has the 004 semi scale NYC Hudson with 004W whistle tender, matching semi scale freight train with one extra car(the black scale SP coal hopper), and small loop(2 straight sections) of Lionel 2 rail track. all the roadbed is warped, but it can be carefully screwed down to a flat board to be usable with some patience and work.  The Hudson runs excellent, its frame has been straightened by a gentleman in Arizona.  Its not zinc pest that warps these, but the way the boiler is screwed to the light housing, which pulls up on the frame, and pushes down on the pilot via the steps on each side.  You only want this screw finger tight, just enough to keep those steps in place.  Its not a perfect set, the cab has been renumbered as the stamped number was wore away, but a good runner if you want to add some OO to your layout.  Gargraves makes brand new 2 rail track, just no switches.  Also open to a clean set of 2343 Santa Fe F3's but mostly looking for a 001 or 002 Hudson with Whistle tender in trade.  Thanks  Mike the Aspie