The scale is actually correct, trust me, it's designed using the original blueprints.
But the model was originally designed for 3D printing, not for TF so it might be that TF is using a slightly different scale.
However the train was a bit too low to the ground
I pretty much have every modern train you can imagine, just not optimized for TF and unfortunately it's too much work to change them for this purpose
http://www.spoorobjecten.nl
Edit: though if you guys are happy with the height scaled version, be my guest