Levers

Spoiler: Solution

The Demo of the Levers :

Spoiler: Demo

Fun tricky level. My gameplay was almost the same but I caught the the higher of the two stars each side of the zapper with the ball which was satisfying.

Thanks @ridgerunner

This works a bit awkward, but it was fun. There are some stair tricks that I'm not the biggest fan of. Trying this level I stumbled upon ways to get stars without B. Tying that together, I first finished the level without using B at all. That was also fun.

Cool lever that acts like a joystick... thanks for sharing @JojoIII

...
grabbed first star,
using parabolic ball.

First of all, I want to thank you for the interesting mechanisms and for taking the time to demonstrate!! I think this is very good and the right thing to do! I really appreciate it!

Regarding the level - I like the idea. But I would prefer this idea on a larger scale and without tricks. (sorry, that's just my opinion). I like the level and the original idea and I would definitely give you 5 if not for one thing:
- I agree with @Block builder - there are two very unstable tricks with stairs

Spoiler

1) leaving the stairs sideways, I didn’t succeed and I did this BB instead. BB is also a bad trick, but it's easier to do BB.
2) Freezing the slider and running onto the stairs is also an unpleasant trick and requires many, many attempts.
you can even see this in your video - you do a lot of repetitions to get these tricks to work. If even the author himself cannot do it with a minimum number of attempts - this speaks volumes instability of the trick

If it weren't for these unpleasant tricks (which, in my opinion, are not needed when the level has a great original idea), then I would give it a 5. But please excuse me, I'll give it a 4 because of the unstable tricks.
But the idea of the level is SUPER! I love original ideas! Thank you

And by the way, @Block builder is absolutely right: your level can be completed without B

Spoiler: Win without B video

Thank you for the feedback on my level, indeed the level can be completed without B but it's not very serious, otherwise in the video that I made I was not attentive to what I wanted for the first and third staircase , the second one actually makes it difficult to pass.
I would try to make it bigger in the future

Wow