Spoiler: Hint - Dropping the 1st Ball - One bot can do a better job - Give that bot lots of space Spoiler: Video Solution
P.S. Spoiler I've had to correct for the rightward drift of rolling balls knocked down by Rs, so I suspected you just might be taking advantage of it instead.
@Meko Guy Yes, but the first time Spoiler I didn't move the slider fast enough and one ball ended up replacing the other so the column didn't drop.
Liked the fact that there was a few possibilities to sort through to get the correct gameplay. Did this after having won the first time with B pushing the second ball (after autopilot down from above) and following onto the ball.
@ridgerunner - The title mentioned 'No Tricks' but I should have looked (better) for possible auto pilots etc as that could/would have changed the potential outcome. Thanks for playing my level.
After our recent conversation I gave this a shot - it looks easy enough, and I'll agree with @Don G Rowe that the ball doesn't roll straight because of R's movement, but it does manage to go in the hole each time. That piece at the bottom really needs to be slammed to get the column to drop. However, that first lift gets me every time - I'm just not fast enough to get B down and off, and R gets trapped on that grassy ledge.