I just got my 80-200mm 2.8 AF-D (the non-S version) back from Nikon. I sent it to have the manual focus/autofocus selector switch repaired. Problem is that I noticed now that there are several specs of dust on the inside of the lens elements and the front glass element feels loose. I remember this lens feeling rock solid when I sent it to Nikon, but now it doesn't feel as solid. When move the lens up or down I can hear the front lens element moving around. The lens autofocuses well, locks much better than before in AF or MF, and zooms well, but these two things are annoying (the dust and the wobbly element). Has this happened to anyone here before? Is this what this lens is supposed to sound like? I really can't remember that noise being there before I sent it to Nikon. The lens is working well. Would it be worth it to send it back to Nikon?