<p>The 70-200 is in a bad way, lots of debris and water residue in the elements- it arrived at Nikon today. We'll see how well NPS works.<br>
As mentioned, I've tried numerous lenses. They all have the focus hunt issue when attached to this body. From googling around its not unusual for the metering and focus system to go when dealing with water damage.<br>
Honestly I think I've exhausted all options, but you never know :)</p>