Issue - There's tooth or tape damage on a separating zipper.

Technique #1 - Isolate damage on the bottom half of the zipper.

Move the slider to sit above the damage. Apply a coil top stop above and below the damaged area, connecting both sides of the zipper. The jacket is now a half-zip pullover!

Technique #2 - Isolate damage on the top half of the zipper.

Move the slider to sit below the damage. Apply two coil top stops to the zipper at the damaged area, one on each side of the zipper tape. The jacket will still zip, just not all the way up.