Originally Posted by Player 1
I have a hercules 750 and I need to recalibrate the machine. its off by 4 pounds. Plus I have this issue where if I put the string anywhere close to the inner half of the string gripper it starts to slip.
A big reason why many strings slip in a clamp is not keeping the clamp/ gripper clean. I'm not saying that is your issue, but you may wish to check to be sure it is clean.