I've got a sliced image in Microsoft Web Expressions 2 with one larged slice in the center for the content. I was hoping to replace the center content slice with an inline frame, but can not remove the space between the edge of the inline frame and the other slices.

I've unchecked the box that reads, "Show Border" and attempted to expand the Iframe so that the edges meet smoothly, but with no luck. Can this be fixed?

Example