Waiting

Spoiler: Video Solution

Almost dropped a star because of B deaths crossing the zapper part of the lever. Was ok crossing the first 5 or 6 times then started. But i really liked the gameplay so 5* it is. My gameplay was different in the way i moved the Rbots about. I never used the draggable beside the winblock.

Spoiler: Variation

I herded R under the rail/step draggable and then made the stack on the step of the draggable. I never put R up high

U

Ok

Great level, liked the logic behind... thanks for sharing @Yusuf

...
long gameplay,
and zapper make it really risky,
that caused me failed alot.