<s:Group id="headerGroup"
width="100%" height="85">
Thanks Robert,
Though I had already tried that. That will make the header itself taller/thiner, but my logo image is still huge and out of proportion. Even played with the logoIcon size, but couldn't get it to maintain the proportions properly. Seems that the old one would "fit" my image to the header, and this one doesn't.
Anyway, I found a different approach, and that was to resize my logo image as close to the original logo.png as possible, and now it "fits" in there.
R_