I have a Hayward Superpump SP1600X and Hayward Housing SPX1600AA. While opening my pool today, I broke both drain plugs (Hayward SPX1700FG) while screwing them into the pool housing/strainer unit. In both cases, the heads detached from the threaded part. I have everything going as I used some Water Weld to gum up the areas, but it's already leaking a bit in both places. Is there something I can use to seal both openings with the screw portions still stuck in there? I'm assuming there is no way I can get them out now to replace the drain plugs. Thank you.