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Author Message   Mareklew Tinkerer Username: Mareklew Post Number: 188 Registered: 03-2010 Rating: N/A Votes: 0 Posted on Thursday, October 14, 2010 - 01:33 pm:    I *don't* know how to open Ultra Pro, however, many Gossen products that passed through my hands, if they didn't have obvious screws, they had a plate covering them (i.e. aluminum back of Gossen Lunasix), that was glued on with non-permanent glue. Have close look... Marek