I have obviously been very unclear in my prior posts. My complaint isn't that the engine is too loud with a buzz. It is that when it is running, it is too quiet, with just a low grade hum, and "shwooses" around the track in a gliding motion.
In other words, it doesn't remotely sound like a train when it is running on the tracks. No mechanical sounds at all, no clicks, clacks, clinks. So, there is zero realism at all in running it.
I think that this has more to do with the fact that it is a diesel model, instead of a locomotive. Even the DC locomotives have mechanical moving parts on the outside of the wheels.
I know that this sounds silly, but I like my engines to sound mechanical.
I guess I'll hook a long string of cars to it that have metal wheels and trucks, and see what they does for me soundwise.
Thanks for your advice and comments.
Mannyrock