I am skeptical of the foil tape approach - looks like a flimsy bandaid. If mine starts leaking, I might be tempted to do the same type of repair but using the super-tough "Eternabond" tape that is used for roof and seal repairs on RVs. It would be easy to cut small strips to the shapes of the foil patches and put them in the same spots. The Eternabond won't leak or crack. I used it for a very difficult sealing problem on a fiberglass RV window frame years ago (same type of thermal expansion issues), and it held up extremely well.