I wouldn't of noticed had I not seen this thread to see the response to the release so unless someone is looking at their new purchase with detail I'm sure there will be many who will not notice or be aware. I'm keeping the one that I've got. Although disappointed to learn that it is shorter than it should be, I still think it is a nice model, it looks good in amongst the rest of my civil engineers stock. I was never going to buy more than one due to my layout size. Many of our models are produced with inaccuracies. I think it will be a case of those who do not notice, those who do but still see past it and happy that it represents the wagon and those who like their accuracy and what they are willing or not willing to accept.
Maybe one day we will find out what happened but I've never heard of a company saying we got it wrong, send them all back and I wouldn't be holding out for a partial refund or we are going to re-tool and we'll send you a new one due to the costs involved. If you like it then keep it. If not, then send it back but I wouldn't hold out for a statement.