Like most of these my 18-200 suffers badly from Zoom creep.
Nikon can, after much cajoling and threats of physical violence, do something about it. But not willingly, you have to keep nibbling away at their defences.
They wouldn't do mine because in spite of it being only a few months old, I couldn't find the receipt and in their eyes I couldn't prove it was within the warranty period. The fact that the lens hadn't been on the market long enough to be out of warranty was a logic completely lost on the morons at Nikon Customer Service.
As long as you've got the paperwork stick it to Nikon.
