Isn't the focus ring on a Nikon 70-200 2.8 VRI supposed to be lose and easy to turn regardless of whether you are in MF or AF? I think that has been the case on VRI and VRII's I have rented in the past. But I rented a VRI this weekend (the store's rental VRII's were both already taken). When I tried it at home, the AF was making noise even after it reached focus. In some cases it made almost a squealing sound. Used it on a job today (figure skating). At first it seemed to focus, but it was hunting and way off more than usuual. Fiddled with the stuck focus ring and it became loose, and I was hoping that would fix things. Instead, it wouldn't focus at all, either MF or AF. I was using it on my trusty D200. Switched it to my D7000 and same problem. Gave up on the Nikon and pulled out my Tamron 70-200 2.8 and it worked fine, so the problem was not with either camera body. Got the job done with the Tamron, which was ironic since the reason I was renting the Nikon was that the Tamron usually doesn't AF fast enough for this particular assignment. So my question, is the focus ring supposed to be able to freely turn or it is supposed to be locked? I'm 99 percent sure that on all VRI and VRII's I've used before (and also on my Tamron) is that it turns freely.