I'd love to see UP's bigboy 4014 that would be sick in game!
I actually have had that model donated to me as well, so eventually I will add it as well! Like I said, the steam locomotives are tedious and super complex, so they take lots of time. So far I have UP #844 in game and working, I am fine tuning the piston and connecting rod movements as this one is more complex then the Berkshire