I have an ANJ-4 from Lost Worlds, which has served very well indeed. However, today I've noticed that the zipper's bottom insert has started to separate from the zipper tape. At the rate it's going, I'm afraid it will fail completely in a short time. I'd like to get the zipper replaced, and as the jacket is only two or three years old I'm sure Stuart would do so. Can anyone speak to any issues about the repro Talons his jackets use?