I have eliminated the battery as an issue. I seem to have a drop in voltage in the system as soon as I turn on the key. When I turn the key on, voltage drops from 12.8 volts to about 11.5 volts. At 11.5 volts, the starter relay doesn't reliably work, hence the starter doesn't fire off. Is does work when I jump it directly to the battery, so I believe that low voltage is the culprit. I took apart and cleaned the ignition switch to make sure that wasn't causing any drop. I then traced the voltage drop to the brown wire that comes out of the ignition switch. Based on the wiring diagram, that wire feeds a lot. Of course in terms of a wiring diagram, I have diagrams for both a 1978E and a 1978SE, and my bike doesn't match either of them, but has elements of both. Interestingly, when I pull all the fuses out the fuse box except for the main feed (red wire), I still get the voltage drop. So, unlike what the wiring diagram indicates, the brown wire must not go directly to the fuse box, but has connections (or maybe a short?) before that. Trying to plot out my next moves. Any suggestions?