I have a sting ray I just bought some DR black beauties. This has always happend through 3 sets of strings. Im stringing up and its all fine until i get to D. When i put in the string in the tuner and tighten the strings goes up a certain amount and just slips right out of the tuner causing in to detune. And this will happen until the string slips out. Im very very angry can some one help me by pass this.