I've been reading this stuff about the bigboy and challenger and here's my problem.
I originally bought the bigboy from IHH, but not too long ago I had too re-install Windows. I did not do a backup of my Railworks folder as I wanted to start fresh with everything, but I did think that I had made a back up of some of the 3rd party DLC's. It turned out that I did some but not the bigboy, so I sent an email over to IHH explaining what happened, and asking if I could obtain another download link. I never received a reply so I sent one over to RSC telling them that I emailed IHH, They replied,
Thank you for contacting the Railsimulator.com customer support.
Did you make the purchase from Steam? unfortunately we will be unable to help with any purchases made from a third party supplier directly,
especially if it was made prior to it being available from us via Steam, if you did purchase it from Steam their system would prevent a duplicate download anyway.
So after receiving this email I figured I would sent another email to IHH, and another (that's 3), I also posted on the IHH facebook page, no reply.

So after all of this I still have no bigboy unless I buy it of steam, which I shouldn't have to do as I have the proof to say that I purchased it from IHH.

It just sucks, I want to be able to drive this huge locomotive, and have it before I get Sherman Hill.