This was actually one of my ideas but I went with something completely different because I didn't have time to figure out how to code all this
Viewing post in You, Again? jam comments
Well, you're supposed to put two clones on the right side of the pulley, which jump off to their death when at the bottom. The key is to delay them jumping on the pulley a bit, so that in the third life you can jump down to the left, flip the lever, go back on the pulley, go up since there's twice the weight, and on the right side, and then jump into the goal! But I'm glad there are multiple solutions to the levels, even if they're technically bugs :D