Hi everyone! I've encountered a problem I am not able to solve recently. I sold two pairs of JH products to two buyers recently and I was informed by the reshell company that they have problems with their drivers. One side of the JH13 has problem with its bass driver while one side of the JH16 has problem with its treble driver. Both me and the buyer agreed that the problems are hardly noticeable but UM said they do have problems from the FR chart. The reshell company (UM China) has opened one side of each phones which means one housing of each has been broken. It has been confirmed that the problem comes from the drivers. I contacted JH audio and they are not willing to repair their products with broken housings. I don't know what to do. Does anyone know where I can get the drivers for JH13 or JH16? I heard E5C is also designed by Jerry. Should I take the drivers from a pair of E5C? Also is it possible to combine these two headphones to make at least one good pair? Please help me and let me know what I should do. Thanks everyone!