Welcome to the Forums, Gil!
You'll probably find lots of opinions on improving the sound of your Challenger over on the Model Railroader forums. Good luck! (This forum deals mostly with prototype railroads.)
However, I will point out that the tender of a steam locomotive is, or should be, a lot more than a receptacle for a sound system. The real ones carried their fuel and water back there.
Carl
Railroader Emeritus (practiced railroading for 46 years--and in 2010 I finally got it right!)
CAACSCOCOM--I don't want to behave improperly, so I just won't behave at all. (SM)
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