I will repair a zipper! One of the tracks “jumped out” basically and since it’s a build in zipper, you can’t reach the end properly. I have looked up how to do it, you are suppossed to cut in between the teeth close to the end on the loose track, fiddle the track back on and then sew together both tracks behind the zipper, so you have a new ending. I am sure I can do it but it will be a first!