As you can see in the video, the string loses considerable tension (10-15 lbs) after releasing the tension pull. This happens no matter how tightly I grip the clamps on the string nor how much I tighten the clamp base to the board. The base clamps do not move at all, it's the clamp itself that moves. Is this tension loss normal and if not, what is most likely the problem? The clamp? Clamp base?
Stringing machine is an Eagnas Hawk 800