I apologize in advance if I don't use the correct terminology! I just set up a new 20'x52" Ultra Frame after having an Easy Set last summer. There are now 3 holes to deal with (2 suction and 1 return) with the T plunger valve. My issue is that the strainer connectors I received ARE NOT THREADED, and therefore it seems I cannot get any accessories like a strainer basket or use a vacuum since I can't screw anything onto the strainer connector.