Oh and one last but extremely germane point Dickie boy. If you nail
your leaders to the wall, you are exposing them to light, which will
damage them, and also greater oxidation, which will be exacerbated by
any temperature changes. They will become brittle quite quickly, and
be extremely risky to use.

If you require confirmation of these observations, I am sure RIO wont
mind you giving them another call?

Just because a nail in the wall works for your Picasso´s Dickie boy,
does not mean it will work for anything else.

MC