So this is about the second or third time this has occurred to me and I can't explain what exactly is causing it at all whatsoever. So what seems to happen is that at the bottom of the string where the little ball is, the string at the end I guess begins to unwind?? I have no idea what is causing this at all. I am using Ernie Ball 10-46s so it is nothing real tight, action is low, and I am not doing anything crazy on the strings. The last time it happened which was two days ago, I was tuning it up to pitch and I noticed that I heard a kink and it went down in tuning and I brushed it off. I then continued in trying to tuning it up again hearing the same kink and it being downtuned. I looked at the bridge and i'm like shit it happened again. Any idea of what is going on??