@_TRNTY_ Seems like a long job, but if you want it to hold permanently taking a day or, two to do it right is worth it. Especially in such a high stress area like the crotch.
@_TRNTY_ Bits. Then proceed to sand down the seam that was glued to the zipper with a pumice stone. Once again ensuring that all the shine is gone and making for the possible conditions for adhesion. After a day for the liquid latex to dry, you can then utilize the same rubber cement
@_TRNTY_ My best advice for you is to re-coat the fabric strip of the zipper with liquid latex. Either the stuff you get from a party supply store for special fx make-up, or better yet. Latex body paint. You will need to remove as much shine as possible and carefully tear away any loose