Beginning to re-work the Main Bus, Essential Bus, and the large diode that connects them (Photo 1). Since the Essential Bus will now have circuit breakers instead of an ATC fuse block, I began to try out different mounting locations for the Main Bus, diode, and E-Bus Distribution Bar (Photo 2). As I removed the diode (Photo 3), I inadvertently spun one of the mounting studs, and it looks like it will be too much of a pain to fix it. So I'm ordering a different one, with a different style of package. This all means that most of the holes in the avionics access door will be unused, and it will look ugly. So now I'm thinking about making a new door.