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Author Message   Leftyb Tinkerer Username: Leftyb Post Number: 1 Registered: 01-2013 Rating: N/A Votes: 0 Posted on Tuesday, January 15, 2013 - 10:04 am:    The aperture ring turns smoothly but the diaphram inside does not keep in step with the ring, it opens all the way but when you step down it only closes down 3 steps, if you gently tap the lens it will close and when opening up again all works any suggestions, the lens has had very little use