Finally got back from vacation and back to work on this thing. Before I left, I let the battery charge for two days and then left it unplugged all week when I was gone. When I got back, the battery was dead as a doornail. Read .34V and the trickle charger wouldn't even touch it. The battery is the same size as the one in the bus, so I took it out and set it next to the car and used jumper cables to connect the two batteries and then hook up the charger. The extra voltage from the other battery was enough to get it to register and start charging. It's finally charging up again, so I'll leave it on overnight and give it a full charge. Next I'll swap in the battery from the bus and try it for a few weeks to see how it does. I can also leave my bad battery in the garage and see if it discharges while it's unhooked. Either I have a very fast drain in the car or the battery itself is going bad, I don't know which yet.
Moving on to the brakes, on the passenger side it got so hot that the seal around the piston completely deteriorated.
Also the upper allen head screw was completely rounded out and it took me most of the day to get it loose. I had to hammer in a larger size allen bit and finally got it wedged in enough to turn the screw. Now I have to order new screws cause they both look pretty rounded out.
The pads on the passenger side were worn down about twice as much as the driver's side, and I replaced them both in February so obviously the passenger side has been dragging for a long time.
I swapped in my vented rotors and got new pads, this time that fit the vented rotors. I also warrantied my busted caliper and got a new replacement as well.
The only thing I didn't do on my last caliper replacement was grease the guide pins. I didn't know I was supposed to and Bentley makes no mention of it except for '89 and later calipers. After talking to a few people it seems like that may be why my calipers have been sticking. I greased them up and reinstalled everything on the driver's side, as soon as I get my new bolts I'll get the passenger's side put back together.
After that I'll bleed it again and see how it goes. I'm hoping I can finally get my brakes sorted so I can drive it again. I think my low fuel economy is also related to my brakes sticking, it's probably causing the motor to work much harder just to spin the wheels enough to break free of the pads.