We have made below changes for the pick-ups:1.The bending distance of the pick-up has been increased from 3.09mm to 7.26mm.After making this modification, the rebound flexibility of copper was increased.2.The bending angle of the pick-up is changed from 65 degrees to 15 degrees so that the pick-ups can rely on the whole copper sheet (14.52mm) to ensure its elasticity.However, the original original pick-up design is bent 65 degrees, and the contact plate can only rely on a section of 3.09mm copper sheet to get power. After many times of swing, the bending position of the pick-up is easy to metal fatigue, which makes the pick-up lose its elasticity and lead to poor electricity taking