Thanks Rachel for the tip,I have never seen it doe like this, You learn something new all the time here.
However, I donīt think I have the patience for this, there is too much fiddling about for me,
Glad you can have the benefit though, it means you have no papers on the back like me to be going on with, I am getting bored with the tiny pieces on the back of mine, but it has to be done.