Rear brakes are not bleeding.

I will repeat an earlier comment (#22)... Now that you posted a picture of the rear brakes with a drain bottle attached, you can understand the orientation of the bleeder, which appears to be at the bottom of the caliper as opposed to the top (see pictures of your front calipers). This does not allow proper bleeding of the rear calipers. Often this is the result of having the calipers switched from side to side. but I tried to do that in my head and the bleeder still seems to be in the wrong place.