I’ve been working on my old 48W and can’t seem to figure out how to get more air flow into the station to allow the whistle to sound. As you can see and hear in the video it’s okay with the roof off. However once the roof is back on it seems starved for air flow to allow the whistle to sound. The built in air passageway in the roof eves seem to be inadequate. Any ideas on how to improve the sound? I have a second housing in which someone had punched several nail holes into the side, which was an attempt for more air, I believe. Thanks in advance for your suggestions.
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