Hi all, I recently got a beautiful C220 and now I'm trying to get a few lenses. And that goes well: I already have the 180 super, the 105, and recently I bought the 55mm/4.5. When using the diafragm ring on the 55, I run into a problem: the lever hits the metal of the lens holder, so I can use it only in f/22. Changing the diafragm into f/16 or lower cannot be done without using force. I bet this is not normal. What am I doing wrong? Sorry if this is a stupid Question... Photo: https://www.flickr.com/photos/muphin/26227683143/in/dateposted-public/ Thanks , Jay