I'm having a weird problem with my D9200 and I'm not quite sure where to begin. The picture on it looks fine, but it has this tendency to quickly shift to the right about 1-2 inches. A few seconds later it goes back. The funny thing is I can make it do this by hitting the cabinet, without a whole lot of force. I'm not even quite sure where to look for this one, but I have to figure something is loose somewhere if hitting the cab causing it. Anyone have any idea where to look on the monitor? Thanks.