Size of TV irrelevant the weight is crucial

I've bought the wall bracket, as I my 46 "Samsung wanted to adjust in height.
First of all, the wall bracket works, but sit the mounting holes in the wall plate so close together that a stable and secure attachment only in concrete or solid material is possible and guaranteed. In perforated bricks or brittle material an injection system should be selected as an attachment.
As fulcrums no bearings are installed. At high shear stress the pivot points (pins) are fixed and the TV has to be raised to turn.