I live in central Texas and my pool temp is now 93. It was suggested that I add an aerator however I can not unscrew any of my 4 returns. I purchased the SP tool specific to unscrewing the returns however thats doing no good (after a couple attempts its now warped and has gashes where screw drivers and pliers were used) and I'm worried about breaking it. I've got the outside ring and eyeball removed. Its the inside ring I cant get out. Any suggestions?????