The Sogno camera is not easy to work on, even by very experienced technicians. In some cases special tools may  be needed. I recall early on sending a Lator lens to a famous Leica guy (YYE) in the USA for CLA... he could not even figure out how to open the lens! After further searching I found Radu, who was still in New York state at the time, and he did a great job. He is my go to guy in the USA, not only for Ducati, but for Alpa (his specialty) as well. Expensive, yes, worth it? Absolutely :-)  

As I was working in Japan at time I began collecting "The Dream" (Sogno) I found the master technician Hayata was able to do the work expertly, on most any camera, except Alpa :-) I think that almost half of the Sogno collectors in the world live in Japan. Many were sold there in the 90's and later after Yamane-san won the auction in the UK of the Ducati Family collection, a huge amount of priceless articles, including the "Sport" and other one of a kind cameras were included, not to mention the lenses, and loads of accessories. Kanto Camera also works on the Sogno, but I was happy with Hayata so never tried them, both have lead times in weeks, or more. There may be others in Japan, but I don't know them. Hayata does not accept mail in orders, you have to be there (Tokyo). Kanto Camera is a better option for doing things by email/post. 

Both of the above are quite expensive, but fair value for their great experience. Both are getting up there in age also, but luckily for us Hayata's son is following in his fathers shoes and is carrying on the work.

Why  do I mention the above three as sources for the CLA (or Overhaul) of the Sogno? Because outside of Italy they are the only three guys in the world that can work on them, that I am aware of. I heard there may be a guy in Australia, but have not yet confirmed it. Here in Thailand there are a large number of camera repair shops, but none I would trust to practice on a Sogno.

In Italy the CLA work can be done relatively easily, there are quite a few options. I have used only Ferro, and he did a good job. The father, Giampaolo Ferro is now retired, but his son Enrico carries on the family business. Others that I've heard of are Sandro Presta and Zoom Service but I have not used them, and I'm sure there are others there in Italy.

Drop me a line should you need more details on how to contact any of the technicians mentioned.

Finally, for the adventurous out there, Rick Oleson, who's great website is now not working so well has given me permission to post his drawings/pics of his dis-assembling of the bottom section of a Sogno. I've never tried it, and probably never will, but feel free :-) I asked Rick if he had something similar for the top end, but unfortunately he was unable to do that part of the work. Good luck!​