Don't waste your money on the dead soft aluminum or copper, they seal the first time but not the second. Just spend the $15 at autozone for the mr gasket. If that STILL doesn't work, take them off and cut all the flanges before you scrap them. This makes it so when you tighten the primary, you can do them individually. Then if another one leaks later down the road, you cut up another gasket and do only one primary instead of replacing them all.