I have a problem, maybe you guys can help me. I just put new strings on my Sterling, but the G string keeps slipping off out of the tuning post (out of that hole in the middle). Know anything that could fix that? They're stainless steel strings. I've tried bending the end so that it's doubled in the hole. That didn't work either. And it's not too short, cause I am getting three wraps around the post.