Brakes going soft after raising car?

I suggest pulling rear drums, pry e brake lever back to make sure its in its proper resting point. then adjust brakes.

When bleeding, which corner(s) had air?

The only one I really think I saw any bubbles come out was the front t drivers, sometimes I see bubbles when the little clear hose moves, indicatinga false positive at times... thats also the side I was lifting most, so hopefully it was the the only one with "true" air bubbles in it.