Interesting topic...Here's another question to throw in-
Is there a way to adjust the volume control for the diesel horn and bell? I've got a rather large layout and can't really hear either when the loco is at the far end...
I am assuming there has to be a pot. on the sound board...but since I just got my 20195 yesterday- I am reluctant to "tear into" it  already...       

Is it possible to do the warranty registration "card" online?

...just received the #2343 F3s today- in a word- Awesome! They run, and look, fantastic!!! Thanks for a great product!