Starz

I like a lot timing levels & this was fun... thank you for sharing @gmaker

I enjoyed the design and gameplay. Overall, a nice level and a non-standard collection of stars - I like it. I doubted between 4 and 5. But since you already have 4, I with a clear conscience give you 5. Thank you

Good one. I'm not sure I played it right as I won without pushing any balls, like this:

Spoiler

I got L ontop of B then let him climb the stairs and eventually he crossed over onto the win block.

Edit: had another go and now I see how to use the balls! One got stuck and stopped the platform moving!

Takes some practice, don't it?
Got it down & got it done.
Novel method of ball delivery, I approve. Good job!