I think the solution you found to the final level is not in fact the intended solution, or if it is, I found a much easier one. Before flipping the button on the top right, throw the magnet down into the pit so it slides down the slope, then switch the polarity so it rotates the door and prevents the block from being able to rise up and squish you. Then, push the button and jump over. No timing or super precise aiming required. I think perhaps the door needs to extend further into that gap so as to clearly convey that it will block the box when rotated to the left. Hopefully that makes sense, I might not be the best at writing guides haha
