On October 18, 2020 at 16:28, Audiophiliac said...
No right or wrong as long as nothing comes crashing down.
And the odds are small it will come down.
Frankly, with all the methods cited here, there is almost no likelihood of the mount pulling loose from the brick... as long as the brick is built right, bricks made solid, mortar done right... and you will never know until...