Sorry to here about their state of customer service.
Fortunately bearings are not obsolete and should be available elsewhere by searching "nice 605 bearings". I think RBC (www.rbcbearings.com)will have them, if not Amazon or eBay.
I am missing;
Rubber Washer - PN 26812
Fibre Washer - PN 26716...
I have the same model (103.23100). It was my grandfather's, and I am having a Heck of a time with the spindle pulley assembly. If you or anyone else could post a few pics of said assembly + parts, I would really appreciate it.