The washer type screw cap, is too big to screw back onto the bottom plate, and there is no leveling spring.  If the base plate fit, and sat flat, I had to use tape to get base to stay on, it might sit level.  As it is, the dish kind of balances against the edge of the sink, so…. It’s a good idea, and the dish part does keep the soap from sitting in water, it’s just wobbly.