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Author Message   Dgillette4 Tinkerer Username: Dgillette4 Post Number: 176 Registered: 04-2007 Rating: N/A Votes: 0 Posted on Wednesday, February 27, 2008 - 05:13 pm:    One thing to check first is the mirror damper foam strip which gets sticky with age, this is a very common problem. Carefully cock the shutter then without a lense gently take your fingernail and pull down on the edge of the mirror, if it plops down you know what it is. There is a piece of foam then that has to be removed from the holder on the top of the mirror box. You will find supplies on this web page to replace it. Don