No damage? No tension either. At least you're consistent. LOL I guess now you are going to tell me you make it up on the next pull.
Try using a business card around the string before you clamp it. You may want to clean your clamps good too as the string should not slip.
When you're dead you don't know you're dead. It's the same way when you're stupid.
Balance - 31.0 cm, Weight - 358 g, SW - 346 Kgcm^2