I have uploaded a file that fixes an InputMapper spelling error for the BNSF ES44DC locomotive from the Stevens Pass route:
http://store.steampowered.com/app/222617/ available currently to USA Steam DTG accounts.
The error does not allow controlling the dynamic brakes properly, "when trying to reduce" any setting applied as it will fall to -12%, no matter the value it had before starting the reduction.
If you use the keyboard to fine adjust the dynamic brakes settings (as I do) then this file is for you.
It won´t make any changes to the HUD controls and as far as I know it is not noticed when using the Rail Driver controls. However I suggest that even those using that way of controlling, install the file to fix the error.
The file will not make any changes to the physics mod released by FanRailer which I highly recommend to install and that can be found here:
http://railworksamerica.com/index.php/download-library/accessories?view=document&;id=1494:stevens-pass-bnsf-ge-es44dc-physics-mod&catid=24:accessories
My file, dated Dec 30, 2015 is in the library:
http://railworksamerica.com/index.php/download-library/accessories?view=document&id=2006:stevens-pass-es44dc-dynamic-brakes-keyboard-fix&catid=24:accessories
The Marias Pass ES44DC is not affected by this error. I do not have the sole BNSF ES44DC locomotive DLC. Therefore I can´t tell if it has this InputMapper error.