First ball rolled over the slot and onto the lift but I continued on and after P got frozen basically was going to give up due to the hidden. Had a peek in MekoStudio and then figured maybe the 1st ball was too hard. All worked out on the 2nd attempt. Revisited the 1st ball and seen that P could have helped on my first attempt but didn't know better. Thanks for sharing. EDIT - Forgot to mention, B can have a hard time dropping a ball while on a ball.
Had to restart several times as that upper ball usually rolled past its target, even with P frozen in place... and as noted above, it's not always easy to hit that last ball. Otherwise, a compact level, and a good job on deciding which way that last ball should fall.
I enjoyed the little puzzle as to which ball needs to go where, . It all worked nicely, but I was looking for more when it was all done.
Its a 4* level for me.. i have the same issue as @Meko Guy mentioned... I think drop a ball on standing on a ball is not stable