Crown Machinery Auto Pro Perf Wheel

[impprint]

I have the Crown Auto-Pro Plus (I'm not sure if it is I or II) numbering machine and need new perf wheels for it. This machine has been discontinued and Crown no longer sales these wheels (because they are external to the feed system), so I am in need. Does anyone know where I might be able to get these wheels or there is an aftermarket wheel that may work?
Thanks,
Jeff