Ross,
Thanks again for staying with this.
I don't recall saying that the track is not sitting level on the platform. If I did I put it in context: One suggestion said to put the outer rail in to the slots in the tabs. I then responded that if I do that the track will sit unevenly then. In fact, the picture that was posted where he illustrated showed the track leaning to one side.
I was really hoping that someone with a milk car/platform who uses O-27 track could give a definite answer but that isn't happening it seems.
But I do appreciate all of the suggestions and comments. No one is obligated to jump in and take the time to read, digest, and offer an opinion so I always appreciate when they do.
As always, thanks - walt