Headlight weirdness this morning. It's a dynamo light and I just leave it on all the time. It does not have a flashing mode. But today it was flashing in a most annoying manner, and the flashing was mostly synchronized with my pedaling. There must be a short somewhere. I stopped and futzed with the wires several times, enough to make me miss my train, but not enough to fix the problem. Looks like the bike will need a bit of attention before I ride it on the NJ Arrow next month!