Can anyone recommend a repairman for a CLA on a 120 folder in the United States? I have an Ercona II with a shutter which is no longer reliable (I think I messed it up by accidentally engaging the self-timer--in any case, I only got one good exposure on the last roll of film that I put through it). Jurgen Kreckel (Certo6) is well-known for this, but he is extremely busy. Are there other people with experience with these cameras, who have done good work in the past?