Window stamp positioning

[maurotrotta]

I have an issue with the position of a custom window stamp. I would like the stamp to offset to the inside of the wall at a specific distant, but when I find the right position, it doesnt work in the other walls that face to a different side. Please see the pictures attached to understand better what I mean. 

I have look into the horizontal and vertical position setting of the stamp but I don't get it right yet. Can I have a setting that automatically place the stamps as I want or do I have to manually place the ones out of place?