こんいちは
I'm back. I have upgraded to 10.9.1 and tested ... tested.
I didn't want to answer before I was more sure that ...
upgrade seemed to work better or ...
actually,
I haven't found any mistakes anymore with this (keyb layout).
Nowadays, it seems that then I choose and write with British, Finnish, Romaji and Hiragana -keyb layout
those seemed to work as those should work ... in common sense ... with any combination.
(like British asdfghjkl;'\ Finnish asdfghjklöä' Romaji asdfghjkl;'\ and Hiragana あsdfghjkl;’\)
Testing ... testing ... it will take time as I have noticed and
sometimes some upgrades will change something unwanted again.
But now, this seems to work as fine as possible.
Thank You, kiitos, ありがとう