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Author Message   Cooltouch Tinkerer Username: Cooltouch Post Number: 195 Registered: 01-2009 Rating: N/A Votes: 0 Posted on Thursday, January 05, 2012 - 10:50 pm:    No it's not the mechanical movement. The meter is working electrically and it's definitely responding to light. The needle climbs and falls as I move the camera toward and away from a light source. I recall seeing a diagram showing the eccentric you mention. I'll have to go back and study the repair guide some more. BTW, the Oly OM-1 repair manual we have here consists of four exploded diagrams, and they are of mechanical parts only. If the site owner/moderator is interested in adding it to the collection here, or if anyone else might want a copy, the .pdf I d/l'd can be found here: http://www.scribd.com/doc/47180100/Olympus-OM-1-Service-Manual