The hex pillars have been cut with star patterns on the ends which just
grind into the polyester on tightening. So I've changed my mind to abraid
the pillar ends , 3 st/st crinkle washers , longer screws and laquered heads

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Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/