neverty

Hello engineers, i ve build a rocket with 3 stages (3 different engines and 3 different fueltanks). The first engine works well, just using fuel from his direct connected fuel tank. But the second engine also uses fuel from the third fuel tank not directly connected to it. I rebuild this rocket several times but always i ve the same problem. I don t know where i do the mistake. There are no fuel lines or anything else. Maybe someone has an advice? https://imgur.com/a/CBm9Jc8