OK...starting to get partial answers to my own question. Maybe this will help others. Ames (and others) sell the harness. They directed me to M & H Electrical fabricators, who make the harness, but for some unknown reason M & H refuses to sell me just the pigtail separately...but they did refer me to www.repairconnector.com
Appears I can buy a pair of 5 packs of these terminals, and if I can cleanly get the terminal block open I can cut the rusted/bent/destroyed terminals off each wire and re-crimp new ones...essentially rebuilding mine with new terminals.
It is an option. I haven't tried to get my 45 year old plastic terminal block apart yet...something tells me it might be an issue disassembling it without cracking it. We shall see...might play with it this weekend.
I sure wish I could just give somebody $50 or so and have them hand me a brand new built pigtail...it seems to be very difficult for me to source. I'm still open to leads and references if anyone has them...