Two Star deduction for some ill-considered construction of the stops on the rail end.
The Allen screws heads turn around quickly. In addition, by the rotational movement of the screw, a millimeter-accurate positioning of the stops is not possible (the stops are clamped in the rail; the rotation of the screw pushes the stopper along the rail). Plays with a sliding door on the wall safe not matter much; but running the door in the wall, it is very fast fiddly. Double annoying is the Qulatität the screws, because after repeated position of the stops the Schraubenköpe are round.
