1. Check the recommended hole size to be drilled. I found it to be too big for the plugs supplied and had to pack it.
2. Don't use the built in spirit level, mine was out by quite a few degrees. Luckily I had only marked the wall out and thought that doesn't look straight! got my proper level out and corrected it.
3. The shortest bolts were too long and would have damaged the inside of the TV had I screwed them in. Had to put some spaces under them to sort the length. (would have cut them but it was late!)
Other than that a solid well made bracket.