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Author Message   Sevo Tinkerer Username: Sevo Post Number: 14 Registered: 09-2008 Rating: N/A Votes: 0 Posted on Thursday, November 13, 2008 - 04:54 am:    A "solid metal core"? Sorry, but I can't make out whether you pulled the helical from the tubus/panel, unscrewed the front or back element, or unscrewed the shutter. It might help if you could upload a picture of the damage.