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Author Message   Aphototaker Tinkerer Username: Aphototaker Post Number: 17 Registered: 12-2009 Rating: N/A Votes: 0 Posted on Thursday, December 24, 2009 - 01:03 pm:    I suspect, though I may be wrong, that the fluid is coming from the inside mechanism of the lens and is not just on the blades. In any case, does the behavior sound like it is oil? The fact that it is disappearing makes me think it is not oil, but am new to this.