Since I realized that the chimney sweep couldn't get to the chimney because of my model railway system, the system was dismantled. It will not be possible to rebuild it in this position. Since I don't have any space, the things are now well packed and ready to be set up if a good solution is found. There is a plan of what the new facility should look like. It will have three levels with a shadow station, a double-track block line and a sack station. The space requirement is given as 2.60m x 1.30. The trains could be up to 1.80 m long. That's more than before. The track material is all there, the only thing missing is a suitable place. I hope I'll come up with a good solution soon.
Here is the track plan