I should have taped the threads - We just had about 10" of rain this week. I pulled the top plug out of one of my Gizmos to check to make sure my skimmer lines were still drained and sure enough the water inside of the gizmo was up to the pool water level - When i closed my pool i put 4 gallons of anti-freeze in the lines. Should I re-blow the lines and re-do the antifreeze and then tape the gizmo threads before putting back?