Hi, i recently got a sharp QT77. The 1st deck works fine, but the second deck is slightly slow. As far as i can tell, i need to replace the three belts (1&2 for the tape counter, and 1 from the motor. 1 and 2 are NBLTK0280AFZZ and NBLTK0281AFZZ, which i have not been able to find specs nor a seller for. the drive belt is simply nbltk0277afzz, which is a SCX9.5 i believe?