The table properties is set at Centered & Around.

So then on Page Layout, Margins i have the box as shown in post above.
At present its printing to far on the left hand side.
At present left & right is set at 0.25"

To make an adjustment do i make both the same say 0.35" or if i add a value to the left do i subtract it to the right.

I dont see any dotted line example to show the margin on the page so i would have to keep printing until its correct ?