As already stated this loco runs very well but it does have a problem reversing into its siding. Either the pony on the loco or the wheels on the tender have a marked tendency to de-rail. This is frustrsating as it operates from the siding where it has to reverse to pick up its train. I have tried sanding down the rail connections but it seems that the radius of the curves is a little too tight for it. I am not sure what Lilliput locos were normally run on but certainly not HD 3 rail track. Its a problem which I can live with but it would be nice to solve it.