tape transport drive belts

Evening folks, I?m bringing a Sharp MZ80B back to life and have so far fixed a horizontal collapse problem on the video board meaning I can see what it?s prompting for at boot. I remember when I first got this machine back in 2003-ish I dismantled it and discovered some of the tape transport had melted and gummed up the automatic head mechanism. Fast forward* 15 years and I have the transport in bits again on the bench and I can see that one belt has melted and another is on the way to collapse. Did we ever find a reasonable source of replacement belts? I know a couple of collector friends with 3D printers have printed replacements but this is new tech and I need old tech :) Cheers! *sorry, pun intended -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest private home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk