Thank you so much for trying it out! I do think I may have made that last level a little confusing, but the idea was that you could make the elevator go higher by having multiple clones stand on the push plate.
Oh, then I definitely cheesed it. I used some clones stacked on each other and some careful timing in switching clones to get on top of one of the sides as they moved, and then rode it up to the top. Probably a good sign though that there are multiple solutions then!