I dropped a star because of these - The slant/straight mechanism didn't always work and there are more times that it didn't worked. The straightening wasn't stable for me, the slanting was quite stable but also failed once. Most of my restarts are due to that. Also the other autoslider release mechanism. It is very hard to push and I see you also face the same problem as in the video. A bit disappointed there. Some of the ball paths are obscure but the slant/straight mechanism B offset fall move was most obscure of all. I couldn't have think of that unless I accidentally tap the block which is what I did. I didn't dislike it but I think a hint will be very much appreciated in the first place. Last, the two fence autoslider at the corner - I personally think a draggable will be better because a wrong timing tap will result in B being pushed to the white. Since the slant/straight mechanism didn't work everytime, it will be getting more frustrated and it's likely for a player to rush and thus having a higher chance to fail at the two fence autoslider(which occurred to me....) Then it will be a restart going through the gameplay before, hoping that the slant/straight mechanism will work perfectly the next time. It's long but unfortunately I'm afraid I didn't enjoyed it much due to the issues stated above.
I understood what you want to simulate through this level. I guess it would a big adventure if the mechanism would well work. But I always restarted level because a B stuck in the mechanism.
The logic of the level is very cool as always! But there is a problem - when you need to return the rotary mechanism to its original position, B gets stuck!! Often. Sometimes the swivel mechanism unfolds very strongly and therefore it is no longer possible to return it to its original position. I'm sorry I can't finish because of this.
I really liked the logic and the shove move to get B to the finish but the squeeze move to release the one way slider was so stiff it was very unpleasant to do. I failed on my first start and presumed it didn’t actually move. I also had to wait about 20-30 seconds for the slantable to straighten up. So sadly a drop of a star.