Moving Groove

I can see where B needs to go to get the ball but can't seem to bump or get B there. Hint please?

Cancel last unless you have a stable way - I found an unstable way and I say unstable as I was able to get it twice in 50 times. Now to move past the first obstruction.

Finally won! Had to drop a star for the 1st move. I asked for a hint and you LIKED it but no hint???? Go figure!
Your Groove Slider was like fitting a free draggable into a square which can be hard.
Then at the end R decided to jump off instead of going to the win. I did like that you allowed B to go back and help R when R needed some herding but overall, I'm glad it's done.

@gmacpro I'm sorry. I was writing a hint that i fell asleep

@gmacpro I'll send you a video of this level

Nice mechanism idea. Perhaps at the end it is a little bit repetitive but it was fun. Thanks!

@gmacpro

Spoiler: for you

@hadi - I only wanted to see the 1st move but now that I watched the movie I did it differently but similar. My B didn't use the slow slide to get to the top where the ball is but the stairs. My B got the 2nd ball and then I brought R forward. I see you were fighting with the mechanism at times too but none the less, we both made it. The 1st move is still tough. Thanks.

I didnt see the shortcut for B and moved him round the groove that was delicate. Managed to release second ball with B ok and finished same as video

@ridgerunner thank you

Excelente logic/cooperation level!! Challenging and funny at the same time...Thanks for sharing and great job @hadi