I have an Inground pool that is less that 1yr old. The pump and all systems worked great last year. The wet end of my pentair pump failed three weeks ago. One of the tabs broke off and the lid would no longer seal. I called the pool installer and he located a new one for me under warranty! I replaced it and the same thing happened today. I’m at a total loss as we haven’t even removed the lid since I installed the wet end. Any help on what could be causing this would be greatly appreciated.