I have a FM trainmaster with the roof fans. They do make a fair amount of noise but not enough to drown out my engine sounds. Mine quited down quite a bit after some use time. May be there is a You Tube video that you can hear what the roof fans sound like so you have something to compare it to. At first I was annoyed at the sound but now look at it as if the real things definetly make noise when on. That's a beautiful engine you have there. I'm sure you will enjoy it very much once initial bugs are out. Legacy items for me have been rock solid after a trip or two to Lionel for tune ups. Sucks about windshields. My fans turn off if I shut down smoke unit with remote.
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