Thanks to Scott and others with suggestions of how to "make work" what I have. Ive looked at that and its less than my favorite solution - for a couple reasons. I would really like to have the real mccoy and it looks like based on this Sutherlands chart thats possible. The question was did Mafac accomplish the various reach lengths by making arms longer/shorter or the mounting bracket longer shorter or both? Ive got a very nice set of these (54mm reach). Cleaning polishing is easy to do as theyre not anodized. In addition to finding correct reach set I may be able to find arms or mounting bracket at a swap (or in Pauls garage!) if I knew what to look for........
Thanks
Tom Rawson
Oakland, CA