Every time my Polaris 3900 Sport turns on, the connector hose comes apart, and the little black nut (like an o-Ring) comes off and drops to the bottom of the pool. The the unattached hose goes nuts and sprays water everywhere. I can reattach it and put the ring back on, and then it works fine, but I don't feel like I should have to do that every day. Any suggestions? Thank you!