Manual WB D800 - "PRE" won't flash, can't open lens, how to turn off AF light

Following the user guide that says to hold down the WB button after selecting PRE and a WB memory position and it will start to flash, but the word never flashes. What am I doing wrong?

Also, I am using an AF-S Micro Nikkor 60mm 2.8 lens (brand new) but even in manual mode, it won't allow me to choose 2.8 - only f3. I re-seated the lens a few times and it worked briefly, then stopped again - only f3.

Lastly, can I turn off the AF light that fires in darker situations?

I am new to Nikon, so thank you for any help you can give, Bill