I notice most of the Beolab 8000 MK 1 version has the problem of rotting damping material inside. I have a pair of Beolab 8000 MK2 with serial 20959413, anybody knows if this MK2 has the same problem? I understand that the problem will eventually cause harm to amplifier and power supply board, therefore I want to know if I need to replace the damping material. Thanks in advance.