I have inherited a set of Markle HO's from my dad. I remember him running them some 55 years ago when i was a tot. I dion't believe the've been run since since the mid 50's. I am looking for a source of info on getting them wired up. I am to get the engine serviced at a local train/hobby store as it seems rather stiff. The track is 3 rail and I haven't found any on ebay. I am looking for about 15 striaght and 8 curve pieces. When die Marklin go to the 2 rail track? Can the two systems be combined? Any thoughts y'all might have are appreciated, Thanks, artman46