I have a Copal 3 shutter with a very wide retaining ring. The ring blocks it from fitting in my linhof copy lens board. I'd like to get the ring turned down. I'd like to not pay an arm and a leg to do it. I remember hearing that there was a member on here who used to do affordable work. Any suggestions? Rough but workable would be fine by me. Click image for larger version. 

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