ustream

I've just finished my first composition in Quartz. It's a live scoreboard updated via RSS feeds. The text in the scoreboard is perfectly clear when I look at it in the viewer. It's fuzzy as heck when I broadcast through Ustream. I've tried to configure camtwist to use a higher than default resolution. Right now it's 480x360, and I've got Adobe FMLE configured to stream the same resolution, but I can't see any noticeable improvement over 320x240.

I've used a Tricaster with Adobe FME (on a PC) with 480x360 and it's looked great. Has anyone got any experience here, that might help me clear my text up?

Thanks! Adam