Hi! I purchased an inexpensive Nikon adapter a couple of years ago (can't remember the brand) and it seems the spring in it has finally given up and it is stuck on one of my lenses. If anyone has advice on how to get it off I'm all ears :] Aside from that, I wanted to get advice on which brand of adapter I should get to replace this broken one. The one I have currently says AI-M43 on the adapter. Update: I finally got the broken adapter off of the lens. Now I am in need of a recommendation for a new Nikon adapter that is less likely to fail as this one did.