Hmmm :-k I think now I did move the ceiling timbers away from the wall and from any wall (except from one problem - but first things first). I have looked through all walls and now there is now ceiling timbers in them.
... But where is the ceiling timbers. I can see it in D-cam and in ceiling design in the sections but the timbers is not shown in the plan??? It is there because I can "blind choose" a beam to change section t.ex. as you see in the picture.