Testing out a new 24-70 II (after running it through Fo-Cal three times, thanks again for everyone who helped with that

, and some of the photos are sharp. But those where the camera is steeply angled down, often aren't.
Is that expected? Do others see the same thing?
I don't notice any lens creep, but could it be so miniscule that I wouldn't?
Sorry for my ignorance :/
Cheers.
Shawn L.