Sewing side of tumblr! Broken zip! Help?
I have a lovely padded bodywarmer jacket thing and the zip died last week - I can make the teeth engage for a couple inches if I start it really carefully but then it inevitably comes apart. There isn't any visible damage around that area and it can start coming apart in slightly different places. Also you can start zipping the zip (or failing to do so) anywhere if you're not careful.
So, like. How fix? Is there a magic trick to make the slidey bit work properly again, if that's the bit that's broken? How feasible might it be to replace the whole zip, with so many layers in play and I'm not sure what order they are sewn in?
Inside view and top of zip in case that helps.