A picture or two might help explain more of what you want, but I think you mean you want the token centered on a single square instead of centered on the intersection of a 2x2 square. I can think of two ways to do this. Change the token to Advanced->Is Drawing. Then it ignores the grid for placement, and you can place it to center on a square. The downside is you lose the token bubbles and bars. Edit the token in an image editor like the GIMP so that it is a 560x560 image centered on a 840x840 canvas. The resulting token will occupy a 3x3 square that is then centered on a single square in the middle. The downside is that the transparent "overhand" can interfere with other tokens.