Hello,I just got my first TIU,and a friend loaned me a Hudson Steam Engine & Tender to be able to test it out.I thought it the sounds would be much louder than what they are.What is the yellow screw type adjustment on the bottom of the tender for?Is that the master volume? How else can I get more sound volume out of this thing.The smoke unit is truly impressive, but otherwise,I am disappointed at the level of the sounds.What am I doing wrong?,or is that all there is??? -Thanks,Kenny
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