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Author Message   Asfarley Tinkerer Username: Asfarley Post Number: 11 Registered: 02-2011 Rating: N/A Votes: 0 Posted on Saturday, March 05, 2011 - 12:13 am:    Hi, I've got a Yashica Electro Professional where the shutter opens while the film advance is wound, then closes when the shutter release is pressed. I've tried cleaning the shutter with naptha and dousing the entire shutter mechanism with natpha. The front and rear lens groups are removed. The shutter tends to work smoothly for a period (staying closed on wind) while it's wet with solvent but the problem reappears once dry. Does this sound like it needs lubrication?