I just did the angled chart test:
Nikon D70 Focus Chart
to my shock, I was front focusing badly.
DA* 50-135 is -6
DA* 16-50 is -10
FA 50 1.4 is -10
Again, this really is a shocker since I've gotten tack sharp photos from the 50-135 adn the 50 1.4 in the past.
These were all done in tungsten lighting with flash. I really need a -12 on the 16-50.
I then tested against a bookshelf in the same room. To my shock, these severe focus corrections yielded the sharpest pics. I'm stunned.
Should I risk sending the camera body in after the holidays? I'm concerned it will come back with more issues.