So it had to happen sooner or later. One of my Nikkor AIS needs repair. Yesterday while shooting with my Nikkor 200 2.0 ED-IF AIS, I tried to stop it down and quickly discovered that the lens aperture was not closing down. After further inspection and taking the lens off the camera and trying to flick the little lever the little spring was broken/disengaged. Well like I say. "even monkeys fall out of tree's". Of course I kept shooting at 2.0. So I called Keh repair center and talked to Shawn and they said fixing it will be no problem:biggrin:. I do have to pay for shipping from Canada to US/US Canada but hey, it's one of my favorite lenses and the lens is in other wise in excellent condition. It's nice to know if anything ever does goes wrong with Nikkor AIS that repair is possible.