On 11/02/2020 01:00, Rod Speed wrote:

You should consider doing so. Use a step drill. When I was employed
fixing TV wall brackets in hospitals it was normal to drill out the
little holes in the backplate. I don't know why the put some small
holes in.

Presumably because the smaller screws work fine
in some situations and its a lot easier to drill out
the hole if you need a bigger one than to use
a very big screw when you dont need a rawl bolt.

Washers.

Bill