So yes, I have this working and centering to paper. I just wish to know if this is the most efficient way...
I would not get into that special margin override screen. You are making the job difficult for no reason.
Open the driver and set paper size to 5 x 7. Select print size to 5 x 7 with crop scissor on.
You get a print of 6.68 x 4.73.
Then, see screen snap,. simply type in 0.25 in first white border box. (Make sure you have selected the print so it takes)
Now I have: same size print, with 1/4 inch borders around it.
If you use this 1/4 inch border set up very ofter, I will tell you how to automate.
fred