Thanks to Disney, determining the length of a copyright is a bit complex. It was 70 years plus life of designer or author or artist. Registration not required. Now the copyright could expire in 2048 if created before 1978.
So Bachmann may still have a copyright. The right thing to do was for TrainWorxs to give Bachmann credit for the design and obtain rights to the design.
Just because this is a building design being copied and not a locomotive does not make it right.
Get real. There are only 10,000 churches in the US that look like that.
I only play a lawyer on TV, but I'll bet I could take your case apart, counselor.