Geaux Tigers, when you first hooked up your PS3 to 3D, it should have given you a menu in the display settings asking you what size your TV is. When I got mine working last night, the default option was 72", so if you skipped that screen it might be thinking you're playing on a 72" rather than a 61". Try going into the PS3>Settings>Display Settings. There may be an option there to change your screen size. If not, select HDMI as your video connection and then select "automatic". It may give you the option to change screen size at that time.
One other question: Are you using the interconnect cable between your 3da-1 and your TV? Or is your emitter plugged directly into the TV?