Single Field Alternator Rebuild Help!

It was a non charge issue. Battery replaced, VR replaced and soon after failed. Took it in and they said it was bad. I didn't ask for specifics. Should have bought one right then. But I bought a Remy rebuilt one which lasted 1.5 years until it blew it's guts out on Friday.

I have one with a lifetime warranty from Autozone, easy enough to swap if if this one goes tango uniform. But I would like to have my original up and running as a spare and I had never rebuilt one.

9h, someone asked about brushes being bad. They still look to have plenty of life.
OK, well it could be any part: windings, brushes, or diodes. Understood on the old DCPD stamp on the housing; I have a '62 Dart that is 98% original and so understand the 'rebuild the original part' thing. I rebuilt the head light switch!