Today while laying in my blackbird I noticed that a small section of the zipper stitching had come loose. I've only slept in this hammock for two nights so I'm wondering if I'm putting too much tension on it somehow. I'm able to bend the ridgeline easily while laying down...so I know the angles are correct. It's an easy fix, I'm just wondering if this has happened to anyone else? I used my phone to snap a quick picture of it.