Have you ever seen how much downward force is applied to the end of an articulating mount from a 50" 125 lb. plasma? I would not trust toggles to hold it in place. Hell, I had a job where we mounted a 50" Fujitsu to the Omnimount, and the hex heads that hold it in place for the tilt snapped after only 12 hrs. Hire a professional, or be prepared to replace your wall, mount, and oh yea, plasma shortly.