The title pretty much says it all. I can get my background image centered in every client but and 365.

For the VML I'm using:
<v:fill origin="0.5, 0" position="0.5,0" type="tile" src="image.jpg" color="#384e65" />

And for the traditonal CSS:
<td background="image.jpg" bgcolor="#384e65" valign="top" align="center" style="background-size: auto; background-position: center;">

Any help is appreciated. It's frustrating to get so close but not quite there.