This level appears to be created after stumbling across a move that was repeatable. I've seen a move like this way back when I was creating my 20th card or so but never implemented the move as it was non-intuitive and most players wouldn't think of it. Thanks for the brick marker as that helped. The 1st and last balls were not always stable for me. B landed in the hole on the 1st ball often and the last ball even though guided with rails had it's own mind too. B did win but the restarts and the long entrance from below took longer than the rest of the level.
Intrigued by the difference in the jumps depending on where the ball is located. Very stable for me though not much gameplay.