Rotor ohms out good. 5.9-6 Ohms. I replaced the slip ring plate with a newer, much smoother one rescued from the Rick's alternator I fought with a couple of years ago. The neo magnet I installed is working perfectly. I paid no heed to polarity when I installed it so I can't give you any guidance on that matter. Brushes are well within useable length range. The regulator test, such as it is, checks out. More than 10X the resistance when checking each white wire lead between the red, then the black wires. I assume this is just a diode test and doesn't really tell you a whole lot about how well the regulator is actually functioning. The output remains unimpressive. Bringing the motor up to ~4000rpm sees voltage levels just barely crack 13V, which I guess should be enough. I bought a "Chrysler" regulator a few years ago. Maybe it's time to give it a whirl. Just need to get a couple of bridge rectifiers. Details of wiring the reg are a bit hazy now. I have a two wire plug and three outputs from the regulator. I'll have to do some sniffing around.