Late reply, apologies, from an innocent bystander: The elements look very far apart in that remount. - Have those elements merely been remounted via step-up rings to a Copal-0 or -1 sized shutter? 180/3.2 = 56mm, so, not even a Copal 3 (max opening 45mm) would preserve that aperture..... No idea what Fuji does with it originally, I've never been near a GX680, and my reasoning may be off. But: Overall height of the f/5.6 version of that lens is apparently 104mm, and for the f/3.2 version its 105mm respectively....So, if yours isn't in that ball park....There's your problem. It seems to me you had a both inept and fraudulent seller. Let us know how you got on with that saga.
http://www.jeffbridges.com/perception.html "Whether you think you can, or think you can't, you are right."
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