Someone previously mentioned the throttle switch in another post, which prompted me to open it up and clean it. There were no obvious signs of faulting. I know the regulator was compensating for something, though. I think the djet fault tracing document will really help me get to the bottom of that.

I've replaced the points, condensor, cap, rotor, and plugs in the last month. That's a good call to check the wires, I'll have to do that.

When it's warm, it idles well. I discovered this morning in about 40 degree weather that it's back to not idling well at all when cold. It died about 2 seconds after the first start. After the second start I kept my foot on the gas and let it run around 2k rpms for 20 seconds. After that it would idle, albeit grumpily. The aux air valve still isn't working, it seems. I pulled it off last week and soaked the insides in PB Blaster for a few minutes, but that didn't seem to produce much of an effect.

I have been wanting to check compression, but two things have held me back.... A) I'm scared to, and B) I don't have a tester right now.