Hi anksm22,
From your original post, it's not clear if you took ALL of the available CATs from mba.com and from MGMAT. It sounds like you took 2 of the Official CATs (there are 2 others for purchase, as the other posters have pointed out), but did you take just one MGMAT CAT or did you take ALL of them?
There are groups of CATs that can be purchased from Veritas and from Kaplan, just remember that taking lots of CATs is NOT how you'll become a strong Test Taker. A CAT is a "measuring device" - it gives you an approximate score and points out your weaknesses, but real improvement comes from doing practice problems, honing your skills/timing and THEN taking a CAT to measure all of those skills.
GMAT assassins aren't born, they're made,
Rich