change header size in default kubrick theme?

Have had great luck theming off of the default kubrick theme – but I can’t get the header to fit my larger image! Where do I code for a larger height? I’ve looked through forum posts and help pages for hours, and none of the solutions work for me.

here’s the site: notice how the bottom of the header is truncated?

Here’s the CSS:

#header {
	background: #c7e0ff url('images/kubrickheader.jpg') no-repeat top center;
	height: 230px;

	}
 #headerimg 	{
	margin: 7px 9px 0;
	height: 230px;
	width: 760px;

	}

It should be 760 x 230, but no matter where I code in a height attribute, it just ignores it. I haven’t found any references to height in the header.php, or the functions.php though they both reference either the header image or the CSS header tags. Where is the default theme setting its header image size parameters?

Any ideas? Thanks!