Toshiba 2060/2860 Duplex Feed tires

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Anyone know where or have any Toshiba 2860 duplex feed tires for sale? The copier has only been off the market about 10 years, and all the aftermarket manufacturers have also stopped production of them. I've got one on contract yet that works beautiful, except for a nasty skew out of the duplex tray. The only thing I can figure is the tires, but I can't find them anywhere, and I've been looking for months.

Any help will be appreciated.
Thanks!