Hey Tex,
The image you sent was 72 dpi... I tweaked it a little and sent it back. Should work well for a web page as a small image. It would be great to see the 300 dpi version.
Rob
I'm embarrassed to say I know what the problem was with the larger file size... Under "Color Management" I left the "Optimize for professional output" selected, I normally just use Default. I just got around to posting the update...