I drill a small hole or two, screw in a couple screws, and pry them out. The filings can be removed with a magnet and they will not travel anywhere. I would goop it. It's a pain in the behind if it leaks again. Also, I hate that particular design... I use the one under it that goes in and gets hit in the center to expand it. Use a little grey silicone on the outside edge, and smooth it around the seam after it's expanded, and it's done.