I have a sweet, original, dark gunmetal 392E with said tender now in my clutches. I think it gave a little gasp on the first run, but nothing since. Stuff is rattling around in the tender. I've got a Greenberg book, but I just can't find where it says yay or nay. The original question still stands. I will wait to open it up.
Thanks a million. Enjoy your standard gauge trains - need more track! One standard gauge train running is not enough.