I bought a Graphex #1 with a 101mm Optar listed as "for parts". It was rusted shut. 1 of the shutter blades disintegrated and the other two are weak. If you have a dead or near dead #1 Graphex for little $ please contact me via the pm function.

You can read about it here: http://www.apug.org/forums/forum51/133917-lighter-fluid-would-not-have-cured-one.html