I have been looking for one of these boxes, they have a great look and sound pretty good too. I found one in need of work, I have got it all cleaned up and crackle free, now need to get the tape working. The motor spins. Upon disassembly I see there is a belt completely missing. Crap I was hoping to measure that! Does anyone know belt sizes for this beauty ? The only other issue is the ff and rr buttons don't want to stay pressed, not sure if they will once we have a belt in a tape in. Can anyone help me out ? Thanks guys.