Hiya zimm19**** :-)
I´ve tried your solution**** thank you so much for posting!
Unfortunately I only got 3 stars for it. Now that I understood the concept**** I´ve played around a bit and managed to get 5 stars:
Instead of taking the far left red block in step one**** I´ve taken the far right one (red block next to grey block = 1 step**** red block far right = 4 steps to the left)
Drop the grey one on top (3 steps to the right and one to the left) and then move the top red one on the right hand side on top and turn it to stone (1 step)
'Travel' the grey stone as described in your answer to the next hole on the left (4 steps)
Drop the red stone next to the hole on top and turn it to stone (1 step)~
'Travel' the grey stone again to the next hole and drop the last red stone on top (5 steps)
Pass the grey stone through the transporter to his place on the left and do the same for the red stones.
Total amount of steps 42**** 5 stars.