I have a 2007 Down East spa Windsor 3 hot tub. I’ve recently changed the heater and on pump that was frozen. Changed all the manifolds (previous owner let it freeze). Got it all set and filled let it prime and not all the keys will work. I turn on jet 1 and it’s really low turn on jet 2 and it’s the same not difference. After a while pump one will shut down and it’s really hot to touch. I have to wait a while for it to kick on again. I’m completely stuck thought I had this all fixed. Help please I’m going insane.