Originally posted by TomB_tx I missed out on them when new, but got a used from KEH. It looked good, but the RF was WAY off at infinity as the adjustment "lock" had come loose and it slipped - possibly in shipping, so focus was way off at all distances. I found a procedure to adjust on the Web - accessible by removing the shutter speed dial, and it's been fine after that. But I've never had one of my film Leicas have the RF slip out of adjustment in 50 years.
I would have been on the phone double quick with KEH asking for service. I am glad you found a solution, however. I have never been a Leica owner, but my impression based on user posts on RFF and APUG has been that adjustment is a concern for many owners. Google "leica rangefinder adjustment" and one receives a full day of reading on the subject (120,000 results).* If you have never had one slip from adjustment, you are twice blessed
Steve
* A similar query for the Ikon ZM yielded only 5,100 results, but enough to demonstrate that plenty of users have had adjustment problems.