The ball track is really good quality, but quite tricky under construction and will be delivered without any instruction. Even my capable hands needed a while before I managed to mount the bell on the 1st level. (For more buyer: are fixed here that needs to "crane mount" with little screw below)
Once built then the train is working fine, but is very sensitive to touch. A short nudge and the ball stops somewhere.
The fun has not diminished at Sohnemann and he was engaged in the shakiness for hours with it.
