I've decided to refund the DLC (well once Steam decides to cooperate). I fired up a service, to test out how well it runs going up a hill based on the comments I've seen. I always go back and properly set up the train for MU and DPU setup since at least the MU setup is wrong (for realism, it works in game though). I got the 3 lead locos set up. Noticed that at least the 3rd MU wasn't playing audio. I want to say the middle ES44 wasn't either, but it's really hard to tell. So that's a great start. Hit the banking comm switch and then I switched via 3 camera to the DPUs. No audio at all. Switched back to the front, they also lost all audio. Fantastic. Restarted the engine to get audio back and noticed the start/stop audio is the same crap from the AC4400. Went back to menu and started again... Second time: Lead locos set up, and tried again using 3 camera to get to the DPUs. They have audio this time, great. Guess what, can't open the window from the outside to mess with the controls. So I go back to the front, and walk all the way back. By the time I get all the way back to the rear units, no audio. But I carry on. When I got back to the front, the lead 3 still had audio, and using the 3 camera returned the audio to the DPUs. So I set off. It's a little slow to get started, so I go back to the rear units and find they're not actually powered. I know the banking comm was on, the "lead" rear unit was set up, properly, but the tractive effort bar stayed at zero. I ran another test, this time changing the order of when I hit the banking comm button, and it worked. So it seems, unlike the other US locos, when you hit the banking comm button during setup is crucial to whether or not it works. Never had a problem before. Honestly, while I don't own any Rivet products, from what I've seen they at least try to do things themselves and be creative. Skyhook on the other hand, grabs the same garbage that's been around forever in the DTG content library, adds a few basic things and releases the recycled content. I'm done.