My bike finally works right. I don't understand how I could have assembled the chain without a master link. I mean, I know how to do that very well, but why don't I remember it? I don't even think it's a good idea to do that anymore.
I put a master link in but then I had to take the chain off to take the frame to the LBS. Upon bringing it back home, I had lost half of the master link. Damn. I found another but it just would not fit on. Damn. So I bought some more, and they looked the same as the one that didn't fit. Well it did fit.
Aligning the frame and straightening the derailleur hanger made the gears work much better. Indexed shifting relies on good alignment.
Next I'll put on fenders, a dynamo headlight, and a rack.