Friends have a battery like the picture. Since the faucet / handset switch did not go, I removed the battery, took it apart, soaked it in vinegar and reassembled it again. Now the switch can be moved, but in both positions the water flies and from the shower head and tap. Can the problem be seals? I found a movie on the network that shows a switch like this one (unfortunately I didn't take the picture). https://www.youtube.com/watch?v=BLqcVjSztJ8 And the seals are e.g. in Castorama. https://www.castorama.pl/produkty/instalacja/instalacje-wodne/ak Akcesoria-zasilajace/uszczelki/komplet-uszczelek-przelacznika-baterii-wannowej.html. Is it enough to replace them? Unfortunately, I didn't find any manual with photos