Several years ago I bought a 240mm g-claron in a copal 1 shutter from Adorama and the shutter was listed as being stiff. The speed setting ring was tight but workable. A friend of mine who has repaired some cameras offered to take a look at it. What we discovered was the shutter has plastic spacer inserted on the front opening of the shutter which places pressure on the speed setting ring when the lens is tightened down. When the front cell is removed, the speed selector moves freely. I am trying to figure out if anyone has encountered this problem before and a possible solution as the spacer seems pretty well set into the shutter. The image attached has a red arrow pointing to the ring. The spacer also does not appear on images of a standard copal 1 shutter.

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