Looking for some advice/guidance - ever since opening my pool early June there have been bubbles coming out of my returns. I have a Hayward super pump and I replaced the strainer gasket with a universal one from the pool store which didn’t fix it. I now just replaced the pump strainer lid and the gasket again with official Hayward parts and slathered the gasket with magic lube and still not fixed. I primed the pump really well (fed the pipes water for 20-30 min) but it still takes around a minute to get going. What should the logical next step be to fix the air in the line?