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Author Message   Kitedan Tinkerer Username: Kitedan Post Number: 1 Registered: 11-2006 Rating: N/A Votes: 0 Posted on Monday, November 27, 2006 - 08:59 am:    Does anyone have any experience with un-sticking shutter speed / aperture rings on rangefinders? In particular the shutter speed ring on my Hi-matic 7s is stiff and I need to free it - I am told Ronsonol will do the trick but does this mean dismantling the lens? Thanks Dan