Switched one block to prevent a shortcut. No tricks needed. Thanks to @Meko Guy and @ridgerunner for spotting the block. Spoiler: Video
I am finding it very tough. After trying for hours, I have no clue how to reach to the top ball. In the process I found this shortcut. Spoiler
@Meko Guy by top ball, I meant the ball that I knocked using autopilot. I can't find the route to it.
@I_am_Bot The level is not autopilot immune. @Meko Guy `s hint is a good one. Edit: Added video above
@Don G Rowe thank you for adding the spoiler video. After standing on the rail, it didn't even occur to me that I could pull back the stairs all the way in to make the way. Nice compact level.
@I_am_Bot Thanks! One of the most entertaining features of this game are the things that can be hidden in plain sight ...
Easy enough, if a little unstable for me - I presume it's steadier in 1.3.1, but on my version, B bobs up and down on the metal stairs, and you have to time your tap right to get him to move on. I can't even say that technically that move is an autopilot, because it's just part of B's normal behavior.
@D.S.Masters - B bobbed in .1 and my B wouldn't go to the top of the stairs in .3 thanks to the metal stairs until the right tap occurred, so the behaviour is about the same in all versions.
@Meko Guy Hmmm... he doesn't bob up and down on stone stairs (unless you start him off there), but he does on metal... definitely not good if you're doing a fast start on a level.