Two styles of panels.
It would appear if there are two styles of panels, then there are likely two different buttons. One seems to mount on the surface,(both of mine are like that-no large hole between the screws),and one mounts through the panel-with the screws going back through the panel and screwing into the button base.
Does anyone know if this is so? Maybe the large centre hole was drilled only if a horn was actually mounted?
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cliff
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