Chris, didn't you get bit by the scale bug, and tear down and sell off all your PW stuff?
I would strongly recommend that you stay away from the #397 remakes. I had one come in for repair at our train store. The can motor assembly/gearbox was shot. They just don't hold up well. I speculate that the continuous, repeated impact from the rotating cam / snapping tray only made things worse on an already fragile assembly. Apparently, a lot of people have replaced parts. Consequently, there are no parts remaining on the Lionel website for this product. If it breaks, you're done. A similar thing can be said of other PW remakes like the 192 control tower which almost always ends up with split gears and quits working.
The original postwar #397 is far more tough and robust (just louder), and you can repair it.