Spoiler: Trick List - a variation of elevated eye (If there is an elevated eye under a block, the block above is impassable) - auto pilot (tap and move slider to redirect B) - soft springboard stairs (with B at the bottom and facing stairs, tap the stairs and as B climbs the stair, tap the block ahead of the stairs) Spoiler: Video Solution
I found this level very easy although i might have felt differently if the soft move had not worked first time. Your intro made it simple to guess the trick.
Spoiler R kept falling off the level after walking over the ball that B is supposed to hold still (but mine can't seem to manage it). So I watched the video to see if I was on the right track and discovered an entirely counter-intuitive autopilot would have also been needed later on.
@Don G Rowe - Well at least thanks for playing. Out of all the tests and trials R never was unstable as I guess my ball was still compared to yours. With that said, sometimes, the lift didn't catch the ball in time and then a restart was required. As for the counter... move, it's obvious that a bot will need to get on top of the other in order to complete the level. You may have thought that R goes on top due to the stairs to the win but B and R can't travel well with B on the bottom so that leads to the other option, B on R. I showed the move from a distance but it din't need to be that far away for it to work. This auto pilot move (B get on R with a lift) is used often in many levels even way back so it's not new.