Belt adjustment on original VirZoom bike

[Stain2319]

I did some digging based on the Fitdesk 1.0 which really seems identical and I am about 99% sure this is the belt needed;

Gates 240J4 Micro-V Belt, J Section, 240J Size, 24" Length, 3/8" Width, 4 Rib https://smile.amazon.com/dp/B00CJK39AC/r...REb1TKPSC1