Hello! My new Catalina swim was finally delivered and set up this week! But that's all I got - no instructions or guidance. The swim spa section has 3 "river jet" zones at the end that provide the swim resistance but they are not pushing out enough water volume to swim against and we just out-swim the tub. I changed every diverted to every possible combination with little improvement. Is there a valve or something I am just not seeing? All jets and pumps are on. Thanks for any help!