Coil Zipper Issue Diagnosis Stapgeschiedenis

+	[* black] With the vise grip in the locked (clamped) position: use the screw adjustment at the back to gently close the jaws of the vise grip until it's snug on the zipper slider. (Make sure you're closing on just the zipper slider and NOT the zipper pulls or fabric.)
+	[* black] Unlock the vise grip's clamp and tighten the screw adjustment ever so slightly: a 1/16th or 1/8th of a turn should be enough: you're trying to apply the slightest pressure to the top and bottom of the zipper slider when you re-apply it.
+	[* black] Return the vise grip to the proper position on the zipper slider and clamp down: this time, the vise grip should lock just a little as you apply pressure. Clamp the zipper slider on BOTH sides with the same setting before changing anything.
+	[* black] It might take a few tries with successively tighter settings on the vise grip but eventually the zipper will start zipping properly again. Spray the entire zipper with silicone lubricant for a super working zipper.