This is a list of issues I've encountered building and playing. Mekorama System Problems: Ball dynamics: unpredictable, unpredictable ball behavior Light system: Objects in the dark remain dark, even if they come into the light Motors, rotors: scratching, scraping, getting stuck if they are in direct proximity to blocks; there are only motors spinning automatically in one direction; manual turning with draggable sometimes goes in the wrong direction Physics: Draggable sliders often stick together; Balls as well Sliders: automatic sliders often hang when they encounter resistance