I have a digital scale I use to calibrate the string tensioner on my Gamma Progression ST II stringing machine. The problem I notice is that as I pull it and the brake on the tensioner is applied at the correct tension the tension continues to drop as the string continues to stretch. It seems to be about 2 to 3 pounds and varies with the kind of string I use. So I set the tension after the string has been pulled an average amount of time it takes me to set the string clamp. Does anyone have any suggestions on how to calibrate the string tensioner better?