Thanks a lot! The elevator puzzle is really clumsy. The thing is that if you go press the clock to turn the time back, the place you'll finish will become your new starting point. Which means that you have to place the elevator up and then, with the other mouse, wait then press the reverse time button and end your way as high as you can so that your future starting point will actually be the top of the elevator tunnel. Then the other mouse just has to lift down the elevator and since the new starting point is up the tunnel, your way will be free.
In all honesty, I struggled so much coming up with the puzzles, I wish I had more time to really think them through. I kinda regret leaving this one because I was aware it was way too complicated and not really logic that you can get through objects. Thank you so much for playing though!