OK, thanks. I’ll figure out something like a thin aluminium plate or so. A one millimeter offset should do.
BTW, regarding the nuts on the small screws holding the nut lock: It is really a challenge to place those correctly, specially when you have to diss- and re-assemble the whole caboodle. Proposal for future, comparable situations: Make a very tight-fitting nut-shaped recess in the carrying part and fixate the nut with a short touch of a soldering iron. To optimize that technique, heat up the iron first.
One step closer again. Fine.