The rail system you have implemented on the ceiling is a good and well thought-out solution. A solid ceiling or precise knowledge of the position of the ceiling beams is the prerequisite here.
In my case, the ceilings are made of plasterboard with only a few ceiling beams. The flat was renovated before I moved in. No good conditions for ceiling rails . . .
After all, the doll should be moved around the whole flat - the gantry crane solution is the most practical.
