I am mounting my panasonic tc-p54s1 on the wall and can't figure out which holes on the back of the tv I am supposed to attach the bracket to? I have searched this forum and google but have found no answers. There are 4 screws on the back spaced about 12 inches vertically and 19 3/4 inches horizontally apart. Are these the right screws to take out and attach my bracket to? The only other screws are towards the bottom where the current pedestal stand is attached. Thanks.