The plastic AF/MF selection ring on my 200mm/f4 AF-D macro is broken. There was a thread on this issue in the Nature Forum 6 years ago. Apparently it is a very common problem on this lens. I am wondering whether anybody has this problem repaired. My 200mm macro is a gray-market one so that Nikon USA won't touch it. Since their repair cost is so high, I am looking for another repair shop anyway. It should be a simple part replacement, but you need to take the lens apart to do so.