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Old 17th July 2017, 03:35 PM
alexmuir alexmuir is offline
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Join Date: Jan 2010
Location: Glasgow, Scotland.
Posts: 2,668
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Is it possible that the whole arrangement sits the other way up, and the spring pushes the top lens up against a retaining rim? A picture, or two of the parts might help someone recognise the correct arrangement. I had two Gnome models in the past, but one was a single condenser, and the other had been crudely converted to a diffuser system.
Alex


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